A U.S. Immigration and Customs Enforcement officer charged with lying to investigators about the events leading up to the shooting of a Venezuelan man during the Minneapolis immigration crackdown turned himself in Thursday to federal authorities, a person familiar with the matter told The Associated Press.

Christian Castro was taken into federal custody on charges of making false statements to investigators about the shooting of Julio Cesar Sosa-Celis in January, said the person, who spoke on the condition of anonymity because they were not authorized to publicly discuss the case.

The federal charges follow Castro’s release from jail last week after Texas’ governor refused to immediately sign an extradition warrant to hand him over to Minnesota authorities, who have charged him separately with assault and false reporting of a crime related to the same shooting.

Federal authorities had initially accused Sosa-Celis and another man of beating an officer with a broom handle and a snow shovel during the confrontation. But federal prosecutors dropped charges against the men after video evidence showed the officers may have lied about the encounter, and officials opened an investigation.

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Earlier this week, a federal prosecutor working on the case told lawyers for Sosa-Celis and other victims that Justice Department officials blocked the prosecutor’s push to bring a more serious civil rights charge against the officer for the shooting, ProPublica reported on Wednesday.

But the person familiar with the investigation disputed the prosecutor’s characterization, saying the civil rights probe is continuing and there has been no final decision on whether to bring additional charges. The prosecutor, Matthew Evans, has been fired and is under investigation for alleged obstruction of a grand jury probe, the person said.

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An attorney for Sosa-Celis said the Justice Department has “grossly undercharged this case,” adding that Castro’s statements were made to “cover up the fact that he shot my client through the door of an occupied house without a self-defense justification.”

“Mr. Sosa Celis wants Mr. Castro to be held fully accountable for his crimes,” said the attorney, Robin Wolpert. The American Liberties Union of Minnesota said Thursday that Sosa-Celis also plans to seek damages from the federal government.

Castro was initially arrested in May in the Minnesota case, and he was held in custody in Brownsville, Texas, a city bordering Mexico, while Minnesota officials sought his extradition. But Texas Gov. Greg Abbott refused to immediately sign off, citing continuing investigations of fraud in government social service programs in Minnesota, which Trump used to justify his immigration crackdown there.

Minnesota officials had sought to stop the sheriff in Cameron County, Texas, from releasing Castro, out of fear that he would flee to Mexico. According to a lawsuit filed by Minnesota, Castro had a conversation with a woman, while he was incarcerated, where he spoke about marrying her and buying a house in Mexico after his release.

Castro was suspended from ICE without pay in February while federal authorities conducted the investigation.

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Minnesota officials alleged that Castro, 52, fired through the front door of a home and shot Sosa-Celis in the thigh.

Castro and another officer had chased a different man, Alfredo Alejandro Aljorna, to the Minneapolis apartment duplex where he and Sosa-Celis lived. Minnesota prosecutors said the officer then falsely accused Sosa-Celis and another man of attacking an ICE officer with a broom handle and a snow shovel.