A teenager who verbally abused British diver Tom Daley on Twitter has been arrested. 18-year-old Daley had placed fourth in the men's synchronized 10m platform diving on Monday, prompting a teenager to hurl abuse at him. Daley tweeted "After giving it my all...you get idiot's sending me this" and retweeted a message he received from the 17-year-old teenager, which said: "You let your dad down i hope you know that."