Relatives of a British tourist missing in the Swiss Alps have spoken of their frantic search for him.
Myles Robinson, 23, was last seen outside the Blue Monkey bar in Wengen just after 2am on Tuesday when he escorted a friend to her hotel.
His sister Cara, 25, said: "We've heard absolutely nothing since then. It's a total mystery."
She said her family could think of no reason why he would suddenly disappear.
"He's been coming here for about 15 years," she said. "He knows the region, he knows the locals. He's a normal boy. He would never wander off."
She added: "We are a really close family."
The Swiss army has been called in to help with a helicopter search and teams using sniffer dogs and infra-red cameras have scoured the area.
Mr Robinson was wearing jeans, a white shirt, dark jumper and jacket when he was last seen. Local people said it was a clear night when he vanished.
Mr Robinson was on holiday with his sister and parents Michael and Sarah, of Wandsworth, south-west London. Michael Robinson said: "A body has not been found yet so we are trying to remain hopeful."
He went on: "We have held meetings in the town, put posters up, and are just hoping he will be found."
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