Police are investigating after a 35-year-old man died of what is an expected drug overdose on the Lac La Ronge Indian Band reserve Friday morning.

RCMP were called to a local residence early this morning where they found three adult males in medical distress.

All three were transported to hospital by local EMS where one was later declared deceased.

Officers are working with the chief coroner to determine an exact cause of death.

They are warning against illegal street drugs which could contain fentanyl and carfentanil both of which are considered highly lethal.