TRENTON - Police officers working foot posts in Trenton were pulled off their beats last night after the department received what they believe to be a credible threat against the officers' lives.

Acting Police Director Dave Armitage made the call just after 9 p.m. after learning that gang members could be planning to kill a police officer on a beat.

Foot patrols began at the beginning of this month after Mayor Tony Mack wanted to increase officer visibility in the city.

The city's police unions have reportedly criticized the foot patrols as a waste of manpower and have cited potential safety concerns officers can face while walking outside of their cars.

City police officials have not released any information on the future of the foot patrols.