Police are asking for the public's help identifying a man in his 20s whose body washed ashore in Monmouth County in New Jersey over a year ago. 

Investigators have released a sketch of the man, found at the Gateway Marina in Highlands on Dec. 30, 2013. 

There have been no DNA matches in the FBI's Combined DNA Index System, according to authorities, and no missing persons report appears to match the man.

The sketch from state police provides an image of what the man may have looked like at the time of his death, but facial features, hair length and coloring may vary, authorities say.

Anyone with information is asked to call Det. Andrea Tozzi at the Monmouth County Prosecutor's Office at 800-533-7443 or New Jersey State Police Det. Steve Urbanski at 609-882-2000, ext. 2554.