A plastic bottle was thrown on the track of the men's 100-meter final about a second before the start, landing about 10 meters behind the runners.

Scotland Yard said a suspect is being held on suspicion of causing a public nuisance. Police said the 40-year-old man was heard shouting abusive language before he threw the bottle. His name was not immediately released.

Several runners said they didn't know about the bottle until reporters told them about it afterward.

The bottle bounced a few times and came to rest in the lane occupied by Jamaica's Yohan Blake, who finished second in the race.

"I was so focused, I didn't see anything," Blake said.

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