BRUNSWICK, Maine (AP) — The Maine medical examiner’s office has determined the cause of death of the man whose body was found in Brunswick but his identity remains a mystery.

Investigators appealed Tuesday for the public’s help in identifying the body found Thursday near a small campsite along railroad tracks in Brunswick.

The medical examiner’s office says the man had a catheter, so it’s likely he was under a doctor’s care. The man is believed to have been between 50 and 65 years old; he was approximately 5-foot-7 and 160 pounds with salt and pepper hair. He was wearing tan pants, a brown knit hat, black boots and two orange sweat shirts under a coat.

For now, the man’s cause of death is being withheld.

Copyright 2011 The Associated Press.