Boston Police report somebody on an upper balcony at the Walnut Park Apartments - the round 20-story tower on Columbus Avenue near Washington Street - keeps shooting a BB gun at officers and has managed to hit one of them.
Police say Transit Police officer have also been shot at at least twice, as was a man just walking by the tower.
Police say an officer in his cruiser on Washington Street was hit in the left forearm by a BB pellet that also damaged his window, around 8 p.m. on Wednesday.
Upon exiting his cruiser, the officer observed three individuals on an upper balcony of the BHA Walnut Park Apartments building located at 1990 Columbus Avenue in Roxbury.
Another officer was shot at - but not hit, around 8 p.m. on March 25, while a passerby was hit, several times, around 10:20 p.m. the next night.
During both incidents, the parties involved indicated that the shots had come from an upper balcony of 1990 Columbus Avenue.
Police say Transit Police have reported two similar attacks.
Anybody with information can contact detectives at 617-343-5628 or the anonymous tip line by calling 800-494-TIPS or by texting TIP to CRIME (27463).