MADISON, Wis. -

Madison police say a quick-thinking resident’s phone call is the type of help they need to end a rash of "smash-and-grab" thefts in the city center.

The resident in the 200 block of Livingston Street called police after seeing someone smash a car window with a rock and take a bag early Monday morning.

Police said the department got an excellent description and arrested Johnnie L. McGahee, 41, of Madison, in the 900 block of Gorham Street. Officers found the victim's backpack by retracing McGahee's path back to the crime scene, according to police.

McGahee was arrested on suspicion of theft from a motor vehicle, criminal damage to property, entry into a locked vehicle and on a probation hold.

Police say officers don't know if McGahee is linked to any of the other recent thefts.