MARLBORO - The FBI and Port Authority police have joined in the search for a missing Marlboro teenager with autism.

Michael Karwan, 19, was reported missing by his parents Tuesday night.

He was spotted in Freehold trying to check into a room, but was denied.

Police are concerned he could be in danger. "His parents have told us he does take medication, and they're in fear if he does not take that it will be hard, difficult for him to function to a certain aspect and make decisions," says Lt. Peter Pessullo. "They feel he may be confused."

Anyone with information is asked to call Marlboro police.