NORTHAMPTON — City police responded to six heroin overdoses in the last week.

Northampton Police Capt. John Cartledge said that all six individuals were able to be revived.

At least two of the overdoses occurred in public places — one was at Thornes Marketplace and another at a Dunkin’ Donuts, according to Cartledge.

Police are unsure if the heroin came from the same source, but the department’s detective bureau is investigating.