Police have located the body of an elderly Perth man who had been missing for more than a week.

Ontario Provincial Police located the body of Kenneth Robert Lewis, 85, in a rural area of Montague Township, near Smiths Falls, Wednesday afternoon.

Lewis was last seen at a McDonald's restaurant in Perth at about 11:30 a.m. on April 18.

Police launched an air and ground search for Lewis when they were notified about his abandoned car which was parked on private property in Smiths Falls.

A post-mortem to determine his exact cause of death is scheduled in Ottawa on Thursday.