A United States Attorney’s Office employee in Brownsville, Texas was arrested in connection with an online death threat made during a federal immigration enforcement operation, according to a press release from the Cameron County District Attorney’s Office.
The arrest followed a joint investigation involving state and federal authorities.
BREAKING🚨: In South Texas, A DOJ staffer Karen Olvera De Leon was just arrested on TERRORISM charges after allegedly doxxing a federal ICE agent during a live raid in Brownsville.
She worked in the U.S. Attorney’s Office. Yes, really.
Lock her up. 🇺🇸 pic.twitter.com/bQZ9UuFxKZ
— Officer Lew (@officer_Lew) November 25, 2025
Karen Olvera De Leon was taken into custody on Thursday, November 20, 2025, and booked into the Carrizales-Rucker Detention Center.
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Her bond was set at $20,000. She was later released on a personal recognizance bond and is scheduled to appear in court at a later date.
Prosecutors said Olvera De Leon faces two felony charges under Texas law: one count of terrorism and one count of tampering with or fabricating physical evidence.
The terrorism charge is tied to allegations that she played a role in enhancing a death threat directed at a federal agent.
The tampering charge relates to efforts authorities say she took to conceal her involvement in the incident.
The case originated from events on June 9, when U.S. Border Patrol and Immigration and Customs Enforcement agents conducted an immigration enforcement operation in Brownsville.
The operation was recorded by bystanders who livestreamed the activity on social media.
Viewers commented in real time, and prosecutors said a male viewer posted a death threat aimed at one of the federal agents visible in the video.
A second online user — whom investigators allege was Olvera De Leon — responded by providing the full identity of the targeted agent.
Authorities said this included personal details and was directed at the individual who had made the threat.
Investigators described the exchange as an act of doxxing that escalated the severity of the threat.
BREAKING: Karen Olvera De Leon, a DOJ employee, has been ARRESTED and charged with TERRORISM after she allegedly doxxed a federal agent during a livestream to a man who wanted to k*ll agents.
These radicals within the DOJ need to be PURGED immediately. pic.twitter.com/tdcPGlRj3G
— Libs of TikTok (@libsoftiktok) November 25, 2025
The posting prompted a joint investigation, and authorities said the comment was traced back to Olvera De Leon.
Prosecutors allege she later attempted to delete or modify digital evidence related to her participation in the online discussion.
That activity led to the tampering charge included in the case.
The incident occurred during a period in which threats against border personnel had increased.
Authorities referenced a July 2025 shooting at a Border Patrol facility in McAllen, Texas, where a gunman wearing tactical gear opened fire before being shot and killed by responding officers.
The Cameron County District Attorney’s Office said the terrorism charge filed against Olvera De Leon is classified as a second-degree felony.
If convicted, she faces a possible sentence ranging from two to 20 years in prison.
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