A pair of thieves lifting navigation systems from cars around Macomb County are going nowhere fast.

The Macomb County Auto Theft Unit got a break when two young men tried to take a GPS unit from a car parked at Macomb Regional Hospital.

Sheriff's officials say the vehicle's owner confronted the robbers when she saw them inside her car. One of the suspects at the wheel of a getaway car rammed her vehicle trying to leave.

 By that time, Sheriff's deputies collared one suspect still at the scene, while the other making a run for it was tracked down a short distance later.

A Sheriff's K-9 located the stolen navigation system that was dropped by one of the suspects. 

In custody are 19-year old Montez Tyrone Gantz and 21-year old James William Ruffin, both of Detroit.

A third suspect was also expected to be brought in.