NORTH COAST, Calif. — The Mendocino County Sheriff’s Office is working to identify a woman whose body was found in the Russian River.

At 4:30 p.m. Sunday a kayaker on the Russian River called the Ukiah Police Department to report they had possibly observed a human body in the river.

The police department notified the Mendocino County Sheriff's Office of the incident as the location was in the county jurisdiction.

Sheriff's office personnel along with numerous fire agencies responded to the area of Morrison Creek and Old River Road and began searching the area for the possible body.

Fire personnel utilized an unmanned aerial vehicle to search the river area. At about 5:35 p.m. Sunday, fire personnel located a deceased subject in the river, authorities said.

The sheriff’s office said fire personnel trained in swift water rescue entered the fast-moving water and were able to safely remove the deceased from the waterway.

Sheriff's deputies were on scene and began a coroner's Investigation. The female adult decedent was in a state of advanced decomposition which made it impossible to identify the subject. It appeared the decedent had been in the water for some time, and no obvious signs of external trauma were observed.

The case is currently under investigation and anyone with information related to this investigation is requested to contact the Mendocino County Sheriff's Office at 707-463-4086.

Information can also be provided anonymously by calling the Sheriff's Office nonemergency tip line at 707-234-2100.

Additional information regarding this investigation and the identification of the decedent will be released when it becomes available.