A forensic odontologist helped investigators identify a body that was washed ashore in Greenbank Dec. 14 as 47-year-old Edwin “Randy” Brown of Arlington, according to the Island County Sheriff’s Office.

Brown was last seen on the night of Oct. 9 at a camping site near the Stillaguamish River in Arlington. His friends reported his disappearance to the Snohomish County Sheriff’s Office.

Island County Coroner Robert Bishop said Brown’s cause of death was an accidental drowning.

Forensic Odontologist Dr. Gary Bell of the Washington State Patrol Missing and Unidentified Persons Unit identified Brown from dental records.

A Greenbank resident who lives in a beach-front home off North Bluff Road, which is on the east side of Whidbey Island, found the body near the high-tide mark Dec. 14.

Bishop said the flooding in the mainland during mid-December probably pushed Brown’s body out of the river and into Puget Sound.

“The Island County Sheriff’s Office and the Island County Coroner’s Office would also like to thank Dr. Kallander and his staff in Oak Harbor and Dr. Dykstra and his staff in Arlington for their assistance with the identification of Brown,” the press release from the sheriff’s office states.