By: KDKA-TV News Staff

PITTSBURGH (KDKA) -- Police have issued a "be on the lookout" alert for a carjacking suspect who stole cars in Pittsburgh and Lawrence County.

Pittsburgh Police say officers responded to reports of an armed carjacking in the 70 block of East Carson Street just after 10:45 a.m. on Saturday. Police say the victim said they were robbed at gunpoint at the American Natural gas station. The victim was not injured, law enforcement said.

The victim's vehicle, a silver Chrysler sedan, was found at a carwash in Lawrence County, where the suspect is accused of taking a second vehicle. Police are now looking for a black 2015 GMC Sierra pick-up truck.

Stay with KDKA for more on this developing story.