A 63-year-old man found dead on a Scarborough street Sunday morning died of a heart attack, according to the Maine State Police and Scarborough Police.

Raymond Frank died from “cardiac arrest” said the State Medical Examiner’s Office after conducting an autopsy.

A newspaper carrier found Frank around 5:30 am on Skyline Street. Frank’s body was found a short distance from his home and there is no explanation why he was clothed only in socks and slippers, said State and Scarborough Police.