We just heard on the scanner that someone was taking pot shots with a BB gun at a woman as she walked up Howell near Boylston.
An officer just said that he spoke to a resident who said that a man "had been doing this for several days, popping off BB shots through a window" on the fourth third floor of the apartment building at 1816 Boylston Ave.
Officers found damage to vehicles parked in the area too. They're blocking off all the surrounding streets and discussing the best ways to access the area while staying outside the "field of fire".
Update: Officer advises that "rounds are being fired." "Get inside! We've got a man with a gun on the third floor."
Update x2: "Suspect on the balcony. He dropped the gun off the balcony. We are giving him commands. We've got eyes on him and a rifle officer that is covering him right now." "Suspect is coming out the window"
Update x3: "Suspect is in custody, the apartment has been cleared." Police are going to re-open the streets once they verify that everyone is OK and accounted for.
Update x4: According to Google, this is the apartment building in question:
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