The issue focused largely on a single case, in which two police officers, both on the same force, had a confrontation at a restaurant.

But the department says there may be others, too.

The department says it will continue to review the cases, but it will not file criminal charges against those officers.

It's not the first time there have been concerns about whether the public can trust police when they're in plain clothes.

Earlier this year, the city of Minneapolis announced a