ST. LOUIS (AP) — A heroin overdose is suspected in the deaths of both a St. Louis man and his mother.

The St. Louis Post-Dispatch reports that a woman called police Sunday to say she was unable to wake both her daughter and grandson.

Police say the mother and son were found slumped over on a bed with a syringe and baggie of suspected heroin on a nightstand. The victims were both pronounced dead by emergency workers just after noon on Sunday. Authorities say the woman was in her 50s and her son about 30.