Federal officials are refusing to release the name of the Immigration and Customs Enforcement officer who fatally shot a Mexican man during a traffic stop in Houston, and scrutiny of the shooting is growing after authorities said the man killed was not the person ICE was trying to find.

The shooting in Houston has revived critical voices deriding the Trump administration's immigration crackdown and how ICE operates, especially after immigration arrests around the country surged to 10,000 over a recent five-day period, fueled in part by massive Congressional funding.

No evidence has emerged to support the Department of Homeland Security's version of events that led to the killing early Tuesday of Lorenzo Salgado Araujo - that he rammed an ICE vehicle when it was chasing his white van and that an officer opened fire in self-defense.