Irish teenager Patrick Halpin was last seen at The Zoo bar and nightclub, off Leicester Square in London, on Tuesday night.
According to reports this morning, the 18-year-old DCU student left the venue to go to Burger King but did not return home.
His sister Regina Ní hAilpín told the Irish Mirror: “My little brother was in London on a trip this week and went missing from a nightclub last night and hasn’t been seen since.”
She explained: “He should have been staying in the Astor Museum Hostel, Bloomsbury, London. He’s about 5’5’, sandy brown hair, blue eyes, skinny, only just turned 18.”