A decomposing body was found on McNear Peninsula early Monday morning, and police are seeking the public's help in determining the identity of the person and possible causes of death.

Petaluma Police received a phone call about the body at about 1:45 a.m. from a passing boater, according to Police Lt. Tim Lyons.

Police located the body, which was covered in partial, shredded clothing and decomposed, Lyons said. It appears to have been there for at least several weeks.

Police were unable to determine if the person was male or female, Lyons said.

He described the area where the body was found, south of the David Yearsley River Heritage Center and fenced off from the public, as a privately owned piece of undeveloped property bordered by the Petaluma River and Steamer Landing Park. It was not immediately clear who owned the land where the body was found.The area consists of about 10 acres of wild grass and scrub.

The only access to the area would be by crossing the river or through the park.

Police detectives were called out to the scene to search the area after dawn. The Sonoma County Sheriff's Coroner responded and was in the process of removing the bod Friday afternoon. An autopsy will be done to help identify the body and possibly determine a cause of death, police said.

Detectives will be reviewing any local open missing person cases and contacting people who may frequent the area.

Police are asking anyone who might have information about the incident to call the Petaluma Police Department at 778-4372, or, if they wish to remain anonymous, to call the tip line at 781-1200 or email ppdtips@ci.petaluma.ca.us.