WASHINGTON (TNND) — The Justice Department has launched a federal civil rights investigation into the death of Alex Pretti, Deputy Attorney General Todd Blanche confirmed Friday, marking a shift in oversight as scrutiny intensifies around the fatal shooting.

“We’re examining all available evidence to fully understand what happened that day,” Blanche said.

The announcement came after the Department of Homeland Security confirmed that the FBI has assumed control of the investigation. Earlier this week, Homeland Security Investigations had been designated to lead the probe, but that responsibility has now been transferred.

Homeland Security Secretary Kristi Noem revealed the change during a Fox News interview Thursday night, saying her department would support the FBI’s work moving forward.

“We will continue to follow the investigation the FBI is leading and provide everything they need to bring it to a conclusion,” Noem said. “The American people deserve to know the truth.”

DHS spokesperson Tricia McLaughlin confirmed Friday that HSI will assist the FBI. Meanwhile, U.S. Customs and Border Protection, also part of DHS, is conducting an internal review of the incident, which involved two officers who fired on Pretti.

Officials have not explained when the leadership change occurred or why it was made. The FBI and DHS did not immediately respond to requests for additional comment.

Questions also remain about whether federal investigators will begin sharing evidence with Minnesota state authorities, who have so far been excluded from the federal inquiry.

Noem, in her Fox News appearance, appeared to step back from her initial public statements following the shooting, when she said Pretti had brandished a handgun and advanced toward officers.

Video footage released after the incident challenges that account. Recordings show Pretti, an intensive care nurse, holding only a cellphone as officers forced him to the ground. One officer is seen retrieving a firearm from the back of Pretti’s pants while another fires multiple shots into his back.

Pretti held a valid permit to carry a concealed weapon, but the videos show no indication that he attempted to draw it.

The expanded federal investigation also follows the release of additional video this week showing a separate confrontation between Pretti and federal immigration officers 11 days before his death.

Those recordings depict Pretti shouting at federal vehicles, damaging a taillight, and struggling briefly with officers before breaking free and fleeing on foot.