REVERE, MASS. >> Authorities say two people were killed and another was severely injured in a shooting at a multifamily home in Revere.

Suffolk County District Attorney spokesman Jake Wark says the incident occurred around 8:30 p.m. Thursday on Waite Street. Witnesses told police they heard four or five gunshots.

The Boston Globe reports one man and the woman appeared to be in their 20s, while the other man appeared to be in his 60s.

Wark told that the investigation was "very active."