WILLOW GROVE, Pennsylvania (WPVI) -- Police are searching for a suspect who they believe is behind several armed robberies in Montgomery County.
The most recent crime happened on Wednesday afternoon at the Sunoco on Easton Road in Willow Grove, Pennsylvania.
The suspect is seen on surveillance video walking into the store at about 1:45 p.m. He then looks around for an employee before robbing them.
"He grabs the clerk, pushes him behind the counter, holds the gun to him and orders him to open up the cash register," said Chief Andrew Block, of the Upper Moreland Township Police.
Police believe the same man is responsible for other armed robberies in recent weeks.
Officers say on March 3, a man with a similar description robbed the Warminster Cigar and Tobacco on Newtown Road, which is about four miles from the most recent robbery. The clerk at that store said the man looked the same and even had the same getaway vehicle.
In both cases, the suspect was last seen driving a silver Nissan Rogue.
"These people walking around robbing places, they're the unstable ones. There's something wrong with them mentally or emotionally that they're out there doing that," said Michael Liebel, of Horsham.
Customers were shocked to hear the robbery happened in the middle of the day and worry that crime is getting out of hand.
"It's been getting worse in the last year and a half, two years. It used to be quiet around here," said Tom Moran, of Hatboro.
Police are concerned that someone will get hurt if the suspect isn't caught soon, especially after noticing where his finger was during the robbery on Wednesday.
"He's got his finger on the trigger of the firearm, so it could discharge at anytime," said Block.
Anyone with information about the suspect is asked to call police.