A thief made a monkey out of himself Monday night but was able to steal more than $400 from the Quality Gas and Snacks store.

A man in his mid-20s, wearing a gorilla mask, robbed the Quality Gas and Snacks store, 1751 S. 1100 East, after first wielding a sawed-off shotgun.The man entered the store at 9:50 p.m. and demanded the clerk place money from the cash register into a paper sack, said Salt Lake police Lt. Joel Campbell said.

The robber fled on foot, Campbell said.