Around 6am, the police blocked off the American Legion Highway heading towards that area. I guess this is why.

Boston Police report officers are going door to door looking for leads:

A preliminary investigation has revealed that the victim, a black male and 50 years old, encountered the suspect, who approached the victim's front door. The suspect is described as a light skinned black male could possibly be black Hispanic or Cape Verdean, 15 to 18 years old and wearing a blue jacket with white on the sleeves.