SAUGUS — A 16-year-old from Everett has been arrested after he allegedly broke into a Saugus mall and stole a gun and ammunition, law enforcement officials said.

The teenager had broken into Dick’s Sporting Goods at the Square One Mall overnight and was able to bend a rack where the gun was stored.

Saugus police were summoned to the scene at 4:20 a.m. when a burglar alarm at the store went off. The officer who responded saw a broken window.