LONDON, July 9 (Xinhuanet) -- Three explosions went off within seconds or almost simultaneously in London Thursday, Commander Brian Paddick of the London Metropolitan Police told a news conference Saturday.

    Paddick said that new finding tells that the explosions were "almost simultanuous" not as what believed to be within minutes or even longer.

    Timing devices were likely used to set off the three bombs that caused carnage in the London Underground system, he said. The roof of the double-decker bus where at least 13 people were killed, will be taken away for examination, he added.

    Russel Square, a tube station in central London will remain closed as condition there were "extremely difficult" Paddick said.

    Latest figure shows that more than 50 people were killed and 700 injured in Thursday's explosions in London.

    The criminals are still "at large", while massive search for theattackers are underway in London and throughout the world, he said. Enditem