Three Boston Police officers were shot and wounded and a suspect who fired on them was killed inside an apartment on Ferndale Street near Codman Square on Tuesday afternoon after an hours-long standoff. The officers were all being treated for non-life-threatening injuries, although Boston Police interim Superintendent Gregory Long characterized the injuries as "serious."

The incident began on Tuesday morning around 9:30 a.m. after police were called to a six-family house on the street for a report of a man threatening other residents with a gun. Long said later that police had engaged in negotiations with the man, who had barricaded himself in a third-floor apartment.

Gunfire erupted inside the property around 3:30 p.m. and the three officers who were wounded were transported to local hospitals.

Long said that the gunman was shot multiple times and was pronounced dead at the scene.

District Attorney Rachael Rollins, speaking from the scene on Ferndale Street on Tuesday evening, said that her office would be conducting an investigation into the incident, following protocols for police-involved shootings.

Rollins noted that Tuesday's incident was the second in three days in which Boston Police have been met with violence by people in Boston's neighborhoods.

"In the last three days, we have had multiple Boston police officers stabbed and shot by individuals," she said.

A Boston Police officer was stabbed in the neck while responding to a domestic violence call at a home on Ingleside Street in Dorchester on Saturday night. The assailant in that incident was also shot and killed by police.

-Developing story-