Calgary police say an autopsy on a man found dead outside the Humpty's restaurant in Montgomery on Thursday is complete and that he died of natural causes.

A body was found shortly before 7:00 a.m. near the northwest restaurant by a citizen who called 911.

Emergency crews responded and found the body of a man between the ages of 40 to 50 slumped on a sidewalk out front.

The death was originally considered suspicious but the autopsy confirmed the man died of natural causes and no foul play was involved.