2026-01-26T20:33:05-0500 / CBS新闻
联邦调查人员正在多角度审查37岁重症监护护士亚历克斯·普雷蒂（Alex Pretti）被致命枪击案的随身摄像头录像，而关于证据处理的新披露——包括其注册枪支缺乏书面保管链记录——引发了人们对调查的完整性和可信度的担忧。
普雷蒂在退伍军人事务部工作，周六上午9点左右在明尼阿波利斯南部被一名边境巡逻队官员开枪打死。
两名执法官员告诉哥伦比亚广播公司新闻，多名联邦探员的随身摄像头录像存在，目前正在审查中。但目前尚不清楚这些录像是否会向公众发布。
周六在新闻发布会上，美国国土安全部部长克里斯蒂·诺姆（Kristi Noem）被问及联邦调查局在调查中的角色以及随身摄像头录像是否会公布。她没有承诺公开视频，而是回避了其他问题，称在调查持续期间她不会“讨论调查细节”。
据多名了解此案的官员透露，调查由美国移民海关执法局（ICE）的国土安全调查局（HSI）在特别探员负责人马克·齐托（Mark Zito）和杰森·托德·史蒂文斯（Jason Todd Stevens）领导下进行，并得到联邦调查局（FBI）的协助。
联邦调查局局长卡什·帕特尔（Kash Patel）周日告诉福克斯新闻：“调查的所有环节都由国土安全部下属的HSI主导。”但HSI缺乏处理某些类型材料的能力——例如科学和法医证据，包括指纹、DNA、弹道数据和与枪支相关的实物证据——因此联邦调查局调查人员将专注于调查的这些方面。
普雷蒂手枪的保管链问题
多名了解调查情况的官员表示，普雷蒂的手枪没有书面保管链记录，这一失误可能会影响法医鉴定的可靠性，并损害未来任何刑事或民权诉讼。
据这些官员称，该枪支被放置在车辆座位上，而非按照要求装入塑料证据袋，并标注标准识别信息，包括日期、物品名称和最后一名接触者姓名。
美国国土安全部随后发布了该武器的照片，熟悉证据的官员表示，这似乎是一把定制的西格绍尔P320手枪，口径为9毫米。
适当的保管链通常能确保弹道、指纹和DNA鉴定结果具有法律效力。违反协议可能成为刑事辩护质疑、民权诉讼和内部纪律审查的焦点。
了解调查情况的消息人士补充说，涉事官员在现场的武器尚未移交给联邦调查局进行分析，这引发了对调查做法的质疑，目前尚不清楚究竟有多少名官员开枪。
关于开枪探员和现场情况的新问题
边境巡逻队指挥官格雷戈里·博维诺（Gregory Bovino）周日在新闻发布会上拒绝对有多少名探员开枪、开了多少枪或普雷蒂是否挥舞武器置评。他表示，调查人员将确定这些事实。
白宫发言人卡罗琳·莱维特（Karoline Leavitt）周一表示，调查人员已开始采访现场的探员。
博维诺说，目前参与枪击事件的探员仍在工作，但已被调离明尼阿波利斯，“为了他们的安全”。
“所有参与现场的探员都在工作，但不在明尼阿波利斯，而是在其他地点，”博维诺告诉记者，“这是为了他们的安全。存在所谓的‘人肉搜索’风险，我们员工的安全对我们来说非常重要。我们会确保这些员工的安全。”
博维诺指控普雷蒂干扰了一次逮捕何塞·埃尔塔·丘马（Jose Huerta Chuma）的联邦行动，他将丘马描述为一名有犯罪记录的无证移民。他将枪击事件归咎于“选择”，暗示普雷蒂“选择进入一个活跃的执法现场，干扰、阻碍、拖延或袭击执法人员，并携带武器实施这些行为。这是那个人做出的选择。”
这类调查的通常流程
前国土安全部、ICE和HSI高级官员告诉哥伦比亚广播公司新闻，涉及官员的枪击事件调查通常遵循严格的程序，包括立即控制现场、独立调查机构领导以及有记录的证据收集和保管链。
涉及官员的枪击事件调查通常会与州和地方当局协调。
但明尼阿波利斯警察局长布莱恩·奥哈拉（Brian O’Hara）表示，地方当局几乎没有从调查枪击事件的联邦机构获得任何官方信息。
“昨天有人试图开始调查，”奥哈拉周日在哥伦比亚广播公司新闻的《面对全国》节目中表示，“不止一次，[地方调查人员]在现场被污染前不被允许进入。”
一名前国土安全部官员表示，在这类调查中，联邦机构、FBI和地方执法部门通常会建立“强大的合作关系”，但普雷蒂案件似乎没有这样做。
另一名前HSI官员称犯罪现场“受到污染”，警告证据破坏可能影响未来的民权调查。
诺姆和帕特尔一样，周六表示国土安全部“正在进行这项调查”，并且“处理方式与我们处理所有其他涉及官员的枪击事件相同”。
她多次表示，国土安全部“遵循我们一直以来的确切相同程序”，包括特朗普政府和历届政府使用的程序，并强调“该部门在调查此类事件时没有任何改变”。
普雷蒂枪击视频显示的内容
哥伦比亚广播公司新闻的视觉调查显示，普雷蒂右手持手机，左手空无一物，随后被一名警官推搡。后续视频显示多名联邦探员将他制服在地。
在一段视频中，可以看到一名警官空手进入打斗现场，随后拿着枪后退，该枪似乎是从普雷蒂的腰带中取出的。大约一秒钟后第一声枪响。总共可以听到约10声枪响。
诺姆说，普雷蒂手持手枪接近警官，当探员试图缴械时，他反应激烈，促使一名探员为自卫开枪。
但奥哈拉表示，他没有看到普雷蒂挥舞武器的证据，称普雷蒂似乎正在合法记录执法活动，同时合法携带枪支。
法院介入
明尼苏达州州长蒂姆·瓦尔兹（Tim Walz）和司法部长基思·埃利森（Keith Ellison）表示，明尼苏达州刑事司法管理局（BCA）——负责调查使用武力案件的州机构——即使获得司法令状，也被拒绝进入犯罪现场。
埃利森说，明尼苏达州寻求并获得了临时限制令，防止联邦政府销毁或篡改证据，包括联邦探员从现场移走的物品。
“我们以前从未不得不做这样的事情，”埃利森称这一情况“前所未有的领域”。
据州官员称，BCA后来返回现场继续收集证据并调查附近区域。
部分联邦探员预计很快将离开明尼阿波利斯地区
三名熟悉该动向的消息人士告诉哥伦比亚广播公司新闻，博维诺和一些边境巡逻队探员预计很快将离开明尼阿波利斯地区。两名国土安全部官员向哥伦比亚广播公司新闻透露，该部门将开始撤离目前部署在双城地区的1000名美国海关和边境保护局（CBP）探员和官员，本周开始。
一名消息人士称，博维诺已被解除在明尼阿波利斯的指挥权，预计将返回加利福尼亚州埃尔森特罗（El Centro）部门，他在特朗普政府将其部署到洛杉矶、芝加哥等美国主要城市之前曾在那里担任首席探员。
这一消息是在针对包括博维诺在内的高级联邦官员对普雷蒂致命枪击事件的处理引发强烈反弹之后出现的，而此次枪击事件距离明尼阿波利斯另一名人员（Renee Nicole Good）被移民官员开枪打死不到一个月。博维诺周末暗示普雷蒂意图“屠杀”联邦探员。博维诺和其他官员的一些说法与目击者和现场视频相矛盾。
瓦尔兹呼吁从明尼苏达州撤回约3000名联邦移民探员，称这一激增“不安全且具有破坏性”。
明尼苏达州已就“地铁行动”（Operation Metro Surge）提起诉讼，称其“前所未有且违宪”，并寻求司法干预以保护调查完整性。
Handling of evidence related to Alex Pretti’s death raises concerns about probe’s integrity
2026-01-26T20:33:05-0500 / CBS News
Federal investigators are reviewing body-camera footage from multiple angles in the fatal shooting of Alex Pretti, a 37-year-old intensive care nurse, as new revelations about evidence handling — including a lack of documented chain of custody for his registered firearm — raise concerns about the integrity and credibility of the investigation.
Pretti, who worked at the Department of Veterans Affairs, was shot and killed by a Border Patrol officer around 9 a.m. Saturday in south Minneapolis.
Two law enforcement officials told CBS News that body-camera footage from multiple federal agents exists and is currently under review. But it remains unclear if the footage will be released to the public.
Department of Homeland Security Secretary Kristi Noem was asked at a briefing Saturday about the FBI’s role in the investigation and whether body-camera footage would be released. She did not commit to making the video public and deflected other questions, saying she would not “speak to the investigation and the details” while it continues.
The investigation is being led by Immigration and Customs Enforcement’s Homeland Security Investigations under Special Agents in Charge Mark Zito and Jason Todd Stevens, with assistance from the FBI, according to multiple officials briefed on the case.
FBI Director Kash Patel told Fox News on Sunday, “All the pieces of the investigation are being led by DHS in HSI.” But HSI lacks the ability to process certain kinds of material — like scientific and forensic evidence including fingerprints, DNA, ballistic data and firearm-related physical evidence — so FBI investigators will be focusing on these aspects of the probe.
Chain of custody for Pretti’s handgun in question
Multiple officials briefed on the investigation said there is no documented chain of custody for Pretti’s handgun, a failure that could complicate forensic reliability and undermine any future criminal or civil rights prosecution.
According to those officials, the firearm was placed on the seat of a vehicle, instead of being secured in a required plastic evidence bag and labeled with standard identifying details, including the date, the item, and the name of the last person who handled it.
The Department of Homeland Security later released a photograph of the weapon, which officials familiar with the evidence said appears to be a custom Sig Sauer P320 chambered in 9mm.
Proper chain of custody typically ensures ballistics, fingerprint and DNA findings remain admissible. Deviations from protocol can become focal points in criminal defense challenges, civil rights litigation and internal discipline reviews.
Sources briefed on the investigation add that the weapons of CBP agents at the scene of the officer-involved shooting have not been transferred to the FBI for analysis, raising questions about investigative practices, and it remains unclear exactly how many officers fired their weapons.
Emerging questions about agents who fired shots and what took place
Border Patrol Commander Gregory Bovino at a briefing Sunday declined to say how many agents fired, how many shots were discharged, or whether Pretti had brandished a weapon. He said investigators would determine those facts.
Investigators have begun interviewing the agents who were on the scene, White House spokesperson Karoline Leavitt said Monday.
At this point, the agents involved in the shooting remain on duty but have been reassigned outside Minneapolis, for “their safety,” Bovino said.
“All agents that were involved in that scene are working, not in Minneapolis, but in other locations,” Bovino told reporters. “That’s for their safety. There’s this thing called doxxing, and the safety of our employees is very important to us. We’re going to keep those employees safe.”
Bovino charged that Pretti had interfered with a federal operation to arrest Jose Huerta Chuma, whom he described as an undocumented immigrant with a criminal record. He framed the shooting around “choices,” suggesting that Pretti had made “the choice to come into an active law enforcement scene, interfere, obstruct, delay or assault (a) law enforcement officer and they bring a weapon to do that. That is a choice that that individual made.”
How these investigations typically work
Former senior DHS, ICE and HSI officials have told CBS News that officer-involved shooting investigations usually follow strict protocols, including immediate scene control, independent investigative agency leadership and secure evidence collection with documented chain of custody.
Investigations into officer-involved shootings are often coordinated with state and local authorities.
But Minneapolis Police Chief Brian O’Hara has said local authorities have received virtually no official information from the federal agencies probing the shooting.
“There were attempts yesterday to begin the investigation,” O’Hara said Sunday on CBS News’ “Face the Nation.” “More than once, [local investigators] were not permitted to enter before the scene then was contaminated.”
Normally, there would be a “robust partnership” between federal agencies, the FBI and local law enforcement in an investigation of this kind, a former DHS official said, adding this does not appear to be happening in the Pretti case.
Another former HSI official called the crime scene “compromised,” warning the spoiling of evidence could impact any future civil rights investigation.
Noem, like Patel, said Saturday that DHS is “conducting this investigation” and that it is being handled “just like we do all other officer-involved shootings.”
She repeatedly said DHS is “following the exact same protocols that we always have,” including those used “under the entire Trump administration and previous administrations,” and emphasized that “nothing has changed” in how the department investigates such incidents.
What video of Pretti’s shooting shows
A CBS News visual investigation shows Pretti holding a cellphone in his right hand and nothing in his left before being pushed by an officer. Later footage shows multiple federal agents wrestling him to the ground.
In one sequence, an officer is seen reaching into the struggle empty-handed and stepping away holding a gun, which appears to have been removed from Pretti’s waistband. The first shot is fired approximately one second later. In total, roughly 10 shots can be heard.
Noem said Pretti had approached officers with a handgun and reacted violently when agents attempted to disarm him, prompting an agent to fire in self-defense.
But O’Hara said he’s seen no evidence that Pretti brandished a weapon, describing him as someone who appeared to be lawfully recording law enforcement activity while legally carrying a firearm.
Court intervention
Minnesota Gov. Tim Walz and Attorney General Keith Ellison said the Minnesota Bureau of Criminal Apprehension — the state agency that investigates use-of-force cases — was denied access to the crime scene, even after obtaining a judicial warrant.
Ellison said Minnesota sought and obtained a temporary restraining order to prevent the federal government from destroying or altering evidence, including items federal agents removed from the scene.
“We’ve never had to do anything like this before,” Ellison said, calling the situation “uncharted territory.”
The BCA later returned to the scene to continue collecting evidence and canvassing the neighborhood, according to state officials.
Some federal agents expected to leave Minneapolis area soon
Bovino and some Border Patrol agents are expected to leave the Minneapolis area soon, three sources familiar with the move tell CBS News. Two DHS officials told CBS News that the department would begin to withdraw some of the 1,000 U.S. Customs and Border Protections agents and officers currently deployed on the ground in the Twin Cities, this week.
One source said Bovino has been relieved of his command in Minneapolis and is expected to return to California’s El Centro sector, where he served as the chief agent before the Trump administration deployed him to major American cities, including Los Angeles and Chicago.
The development follows intense backlash over how top federal officials, including Bovino, responded to Pretti’s fatal shooting, which came less than a month after another person in Minneapolis, Renee Nicole Good, was fatally shot by an immigration agent. Bovino suggested over the weekend Pretti had intended to “massacre” federal agents. Some of the claims by Bovino and other officials were contradicted by witnesses and video from the scene.
Walz has called for the withdrawal of roughly 3,000 federal immigration agents from Minnesota, calling the surge unsafe and destabilizing.
Minnesota has filed lawsuits over Operation Metro Surge, calling it unprecedented and in violation of the Constitution, with the state seeking judicial intervention to protect investigative integrity.
