Civil libertarians are calling on the U.S. Justice Department to expand a probe into the Saginaw Police Department.
The Justice Department has been examining the case of Milton Hall. He's a mentally ill homeless man who was gunned down by six Saginaw police officers as he threatened them with a knife.
The case has raised questions about how the department deals with African-Americans.
Mark Fancher is with the American Civil Liberties Union. He says his office has received several allegations that Saginaw police officers operate in a racially biased manner.
Fancher says it’s not clear if race was a factor in the Hall shooting.
“But in this particular case, we have reported incidents which are occurring in a city which has had a highly unusual killing of a homeless black man,” says Fancher.
The police officers involved the fatal shooting last year were cleared of any criminal wrongdoing.