BOSTON (AP) -- Boston's police commissioner says the fatal shootings of three women sitting in a parked car this week were gang-related.

Commissioner Edward Davis spoke Thursday before a community meeting with clergy members about the killings, which were among five in the city this week.

Davis said at least one of the women was targeted, but said the slayings were unprovoked and "unconscionable." A fourth woman in the car was wounded in the Sunday evening attack in the Dorchester neighborhood.

A separate shooting early Sunday morning near Hyde Park left one man dead and three injured. Another man was fatally stabbed Wednesday near the Dudley MBTA station after an argument on a bus.

Clergy members said Thursday they are offering a $2,000 reward for information to help solve any of the five killings.