CALVERT COUNTY, Md. ( DC News Now ) — The Maryland State Police (MSP) said it was continuing a search for a 10-year-old boy who went missing more than 55 years ago in Calvert County.

Bob Boyes was last seen walking home with his pet deer on Dec. 26, 1986, on Wash Hance Road in Port Republic.

MSP said after Boyes went missing, hundreds of volunteers searched for him on the ground and in the air, going through the wooded area where he was last spotted.

“I’ll forever remember the response from the search team that Bobby disappeared in thin air, without a trace,” Boyes’ younger sister, who was 3 years old at the time, stated in a news release.

MSP was investigating his disappearance but said the case eventually turned cold when investigators ran out of leads.

Boyes would be 66 years old today.

Anyone with information is asked to call (410) 535-1400 or email [email protected].