Boston Police report arresting a 14-year-old on Friday for robbing a 13-year-old of his bicycle on Centre Street in front of the Jackson Square Stop & Shop on Tuesday after officers spotted him riding the distinctive red-and-black bike a few blocks away on Mozart Street at Chestnut Avenue.

Police said the tyro terror was already awaiting court action for several other robberies in Jamaica Plain and Roxbury over the past few months, in which he either brandished a knife, claimed he had a gun or, in one case, smashed a victim in the back of the head:

Jan. 19, 9:15 a.m., 34 Marcella St., Roxbury. Waving a knife, the teen was one of four who followed somebody from an ATM in Jackson Square and robbed him, police say. He was arrested in February on charges of armed robbery, unarmed robbery, assault and battery and trespassing, police say.

Jan. 20, 5:42 p.m., 3 Sunnyside St., Jamaica Plain. Several teens followed a man walking home from the Jackson Square T stop, then smacked him in the back of the head, police say. Officers who swarmed the area found four of them hanging out inside Cappy's Pizza on Centre Street. He was charged with unarmed robbery and assault and battery.

March 27, 6:32 p.m. 124 Minden St., Jamaica Plain. Two young teens walked up to two men and demanded their wallets, police say. The 14-year-old motioned as if he had a gun in his hoodie. The men walked away and the teen threatened to shoot up their houses. Police found the two a couple blocks away on Walden Street and charged the 14-year-old with intent to rob while armed.

April 7, 4:50 p.m. The teen stole the 13-year-old's bike on Centre Street. Police say that after the teen was arrested, they returned the bike to the younger boy's mother.