An investigation is underway after a body was found in a private pond in Marion early on Sunday morning. Deputies say the body was found in a private pond near the 8000 block of Old Route 13 in Marion, Illinois. The person’s name is being withheld pending positive identification. They say they believe the person attended a party at that location around 10:30 p.m. until an unknown time. Deputies are asking anyone who attended the party and may have information regarding the incident to call the sheriff’s office at 618-997-6541 or Williamson County Crime Stoppers at 1-800-414-TIPS.The incident is being investigated by the sheriff’s office, Illinois State Police Crime Scene Services and the Williamson County Coroner’s Office.