POLICE in London investigating the tragic death of DCU student Patrick Halpin are focussing on how the 18-year-old accessed the roof of a fast-food restaurant.
The actuary student's body was found after he was missing for almost two days, in an "enclosed area" of a Burger King restaurant in Leicester Square.
Meanwhile, his devastated family paid tribute to the people who helped in their search for Patrick over social media and to the London Metrolpolitan Police for their work.
Patrick, from Loughrea, Co Galway, was on a trip with the DCU drama society to see West End Shows.
He was last seen by his friends leaving Zoo Bar in Leicester Square just after midnight and was seen heading in the direction of the neighbouring Burger King.
Police last night said they had CCTV footage of Patrick in the fast food restaurant and that his body was found in an "enclosed area" of the restaurant. In a statement they said: "At this early stage officers believe he may have gained access to the roof of the restaurant before being discovered on a lower, usually inaccessible, roof area," a statement said.
Patrick's sister Regina Ni hAilpin had travelled to London with their father Paddy to help in the search efforts there.
Poignantly, Regina tweeted a quote from composer Irving Berlin reading simply "Your song has ended, but the melody lingers on".
Among other tributes to the young man John Skelly, chairman of Kilnadeema/Leitrim GAA club, said Patrick will be in the thoughts of all club members in Croke Park today where the club is taking part in the Intermediate Hurling Championship final.
He said: "Patrick will be our 16th man tomorrow. We'll do it for Patrick tomorrow."
Sean Connolly, principal of Loughrea VEC secondary school, said Patrick, an actuarial student at Dublin City University, had earned a scholarship covering his first year in college based on his Leaving Cert exam results.
Shane Hickey and Caroline Crawford