Montgomery County police are searching for suspects who fired shots outside Westfield Montgomery mall in Bethesda, Maryland, Friday night.

Police believe two groups of two men started arguing with each other and carried the argument into the mall parking lot, where one or more of them fired the shots. All four men then fled the area, police said.

Officers found shell casings, but did not find anyone who had been shot, police said. Bullets struck two vehicles in the mall parking lot.



Chopper4 video showed police cruisers and officers outside of the parking garage near the mall's food court and movie theater. Yellow numbered markers appear to show where police found evidence at the garage entrance.

An officer could also be seen walking with a group of people in the parking lot nearby with a flashlight.