Police have charged Joseph Morrill, 23, of South Portland with robbery for allegedly robbing a bank. Morrill was arrested late Monday and charged with robbery. He’s being held on $150,000 bail. Police say Morrill was wearing a mask and armed with a handgun when he robbed the TD Bank branch on Market Street at about 5:30 p.m. Monday. He was given what authorities described as a small amount of cash and left.