A man has been arrested after a bottle was thrown on to the track at the start of the men's 100m final at the Olympic Stadium tonight, the Metropolitan Police said.
A police spokesman said a man had been heard shouting abuse and was then seen throwing a bottle immediately before the race, won by Jamaican sprinter Usain Bolt.
Speaking after the race, United States sprinter Justin Gatlin, who won bronze, said: "It was a little distraction and I didn't know what it was."
He added: "But when you're in those blocks and the whole stadium's quiet you can hear a pin drop."
