GREEN OAK TOWNSHIP, Mich. (AP) - Police are investigating whether human remains discovered in a Livingston County ravine near U.S. 23 are those of a Hamburg Township man missing since 2005.

Green Oak Township police Chief Robert Brookins tells the Livingston County Daily Press & Argus of Howell that a Michigan Department of Transportation worker called 911 after noticing "a leg, blue jeans and a foot" while doing maintenance Wednesday on a storm sewer.

WHMI-FM reports police are trying to determine if the remains are those of 62-year-old John Gilboe, who last was seen in January 2005 walking in the area after crashing his vehicle.

A county medical examiner's investigator called in Michigan State University forensic anthropologists to assist due to the level of decomposition in the body.