POLICE are stepping up their search for a missing Calderdale man.
They are desperate to trace 21-year-old David Plunkett, of Shelf, who vanished after a night out at a music event in Manchester.
Chief Insp Gillian Mellor told a press conference at the Daytona racetrack that detectives were following up leads regarding David's disappearance, including examining CCTV footage and information provided by a security guard at the event.
She said: "We believe we have a confirmed sighting of David being ejected from the Daytona track. The time, we believe, is 12.30am on Sunday."
Underwater search teams and officers with dogs joined the search