Gang members say they are plotting to remove lug nuts from police vehicles according to an administrative message from the Detroit and Southeastern Michigan Information and Intelligence Center to Detroit police.
"The idea that people would think that's a good idea in any way actually baffles my mind," said officer Mark Diaz, of the Detroit Police Officers Association. "This creates a very dangerous situation not just for our police officers but for the general public, When a tire comes off a car, it creates a fatal environment."
The threat comes after the fatal ambush of New York police officers Wenjian Liu and Rafael Ramos and the deaths of Mike Brown and Eric Garner at the hands of police.
Ron Scott from Detroit's Coalition Against Police Brutality says the threats should not in any way be tied those involved in the peaceful protests seen around the nation in recent months.
"I know the people that I work with, both the people doing civil disobedience and individuals doing different protests, are not involved in anything like this," Scott said.
There have not been any reports of lug nuts being removed from officers cars in or around Detroit.
Officers are being reminded to check their service and personal vehicles for damage.
If you spot anyone removing lug nuts from a car that does not appear to be their own, you're asked to call the police.