(CBS) – Medical authorities are examining human remains found in south suburban Palos Park over the weekend – more than two months after a distraught Lakeview man disappeared in the area.

Palos Park Police say they were called Sunday afternoon to the 12700 Block of Misty Harbour Lane for a report of human remains near a frozen retention pond.  The body was turned over to the Cook County Medical Examiner’s Office.

John Cunningham, 27, was last seen near a forest preserve in Palos Park Oct. 30 while visiting his parents. The Cunninghams told CBS 2 their only child became upset and walked off.  Attempts to get him to come back failed, and her son vanished, his mother said.

Authorities would not speculate on the identity of the deceased, saying several tests must be done.