A man in his mid-30s was shot to death and a woman was grazed by a bullet Tuesday morning in a Dorchester triple-decker home, Boston police said.

It is unclear whether the suspects are still at large - no arrests have been made, and police have been tight-lipped with details. 

Arson investigators were on scene after a fire broke out in the kitchen of the building after the shootings. It is unclear whether the fire was intentionally set. 

Police responded to 332 Harvard St. at 11:26 a.m. after receiving calls about a shooting and a fire.  

The victims have not been identified. The injured woman was taken to Brigham and Womens Hospital for treatment, police said. 

Boston Police Commissioner William B. Evans told The Boston Globe "there are a lot of unknowns here." 

Stay with Metro as this story develops.