Arlington Police are searching for a man they say held up the Leader Bank branch at 141 Massachusetts Ave. shortly after 9 a.m.
Police say the man walked into the bank, showed a black gun and demanded money. After he got some, he ran away, police say.
The suspect is described as a white male with a thin build, approximately 5'8" to 5'10". He was wearing a black mask, black hooded sweatshirt, purple rubber gloves, baggy blue jeans and gray sneakers.
Anybody with information can contact police at 781-643-1212.