Left-wing activists claimed responsibility for a minor explosion on Thursday at a hotel in Davos, close to where top executives and world leaders were meeting, but nobody was hurt.

Devin Wenig, CEO of Thomson Reuters' Markets division, was in a breakfast meeting of senior executives at the hotel when the explosion happened.

"A huge boom went off. The whole ceiling lifted. Everyone was convinced it was a bomb," he said. "It took a half hour to reassemble the meeting."

http://www.reuters.com/article/idUSN2727901520110127