BOSTON — Police say an unidentified man was shot and killed on a street in Boston’s Dorchester section.

The shooting on Downer Avenue was reported just after 8:05 p.m. Tuesday. Police spokesman David Estrada says the victim was taken to Boston Medical Center, where he died.

Witnesses at the scene say the man appeared to be in his 20s. Estrada could not confirm the victim’s age.

No arrests have been reported. It’s unclear if police have any suspects or motive for the shooting.

Estrada says there have been 24 fatal shootings in Boston this year.

In addition, police are investigating two non-fatal shootings that also occurred in Dorchester on Tuesday night. They do not appear to be related.