The FBI is not conducting a civil rights investigation into the shooting death of a Colombian man in Maine who was killed by a federal immigration officer in July, several sources told CBS News, though the shooting took place under circumstances that have raised questions about the use of force.

The deadly encounter between an ICE officer and Johan Sebastián Durán Guerrero on July 13 in Biddeford, Maine, is the latest in a growing string of clashes between civilians and ICE agents as they carry out immigration enforcement surges across the country.

Other shootings involving federal immigration officers that have garnered national attention include the killings of Renee Good and Alex Pretti in Minneapolis, and the shooting death of Lorenzo Salgado Araujo in Houston.

In the Maine incident, the Department of Homeland Security has said that the agent discharged his weapon because he feared for “public safety” after Guerrero allegedly tried to flee in his vehicle from the officers.

The shooting was captured on surveillance videos in the Biddeford neighborhood, and a witness told CBS News he heard Guerrero say “I tried to stop” as he was pulled from the car.

Border czar Tom Homan has also since publicly acknowledged the agent may not have been properly vetted, after the Associated Press revealed his identity and reported he has a history of abusive and violent behavior.

Given the high-profile nature of the shooting, which was widely covered by news outlets, and the questions surrounding the officer’s decision to open fire multiple times, civil rights legal experts say the FBI and the Civil Rights Division would usually take the lead on conducting a criminal civil rights investigation in a case like this one.

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The Maine attorney general’s office, which is also investigating the shooting, interviewed Guerrero’s partner and the mother of their young daughter, Karolina Rojas Alvarez, about a week after the July 13 incident, according to her attorney Ben Gideon.

Gideon added that no one from the FBI, DHS or any other federal government agency has contacted him or his client to date. “I’m not aware of the FBI or any federal agency having boots on the ground in Maine to conduct any investigation into this matter whatsoever,” he added.

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But only the FBI’s civil rights agents would ordinarily investigate whether a federal officer violated §242, depriving individuals of their constitutional rights.

According to DHS, Guerrero was not the intended target of the operation, though his vehicle had four visible bullet holes in the driver’s side of the windshield.

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This is not the first time the FBI has been absent from investigating a high-profile ICE related shooting that has raised questions about whether the victims’ civil rights were violated.

After Renee Good was shot and killed by ICE officer Jonathan Ross in January, the Civil Rights Division was ordered to stand down from assigning prosecutors to help investigate.

The FBI, meanwhile, was ordered to treat the investigation as an assault on a federal officer case, rather than a civil rights case, prompting local prosecutors and an FBI official to resign in protest.

That same month, two CBP officers shot and killed Alex Pretti. Initially, DHS took the lead in investigating the case, as then-DHS Secretary Kristi Noem publicly accused Pretti of “domestic terrorism.”

After a public outcry, Acting Attorney General Todd Blanche agreed to open a criminal civil rights inquiry into Pretti’s death. That investigation remains ongoing.

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Trepel said the FBI’s absence from the investigation in Maine is “detrimental to public trust” and “very concerning because it says that maybe this review will not be as comprehensive or independent as it has been in the past, and that federal officers won’t be held accountable for their actions.”