Police in Montgomery and Chester Counties are looking for a man who they believe committed two armed robberies and two attempted robberies. The four incidents occurred in August and September. The first one was at a Citizen’s Bank branch in Devon, where he got away with an undisclosed amount of money. The next two, at a Malvern Federal Savings Bank Branch in Berwyn and an Allegiance Bank branch on Route 202 in King of Prussia, were unsuccessful because bank employees thought he looked suspicious and turned him away. Then a little over two weeks ago he got away with an undisclosed amount of cash after robbing an Exxon gas station on South Gulph Road in King of Prussia. In each case he covered his face with a white towel. He is described as a white man in his 50’s with a medium to heavy build. At one crime scene a security guard saw him drive away in a red sport-utility vehicle.