Arrest over Daley tweets
A 17-year-old was arrested on Tuesday morning after malicious tweets were sent to Tom Daley.
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Dorset Police said the teenager was held at a guesthouse in Weymouth hours after 18-year-old Daley received the messages on Twitter.
A police spokeswoman said: "A 17-year-old man was arrested by Dorset Police officers in the early hours this morning at a guesthouse in the Weymouth area on suspicion of malicious communications.
"He is currently helping police with their inquiries."
Daley and his Team GB diving partner Pete Waterfield missed out on a medal on Monday when they finished fourth in the men's synchronised 10m platform diving event at the Olympics.
Shortly afterwards, Daley retweeted a message from user Rileyy-69 which said: "You let your dad down i hope you know that."
Daley responded by tweeting: "After giving it my all... you get idiots sending me this..."
Daley's father Rob died last year from brain cancer.
Speaking before the Olympics, Daley revealed that his father "gave me all the inspiration that I've needed".
The teenager, from Plymouth in Devon, told the BBC: "Winning a medal would make all the struggles that I've had worthwhile. It's been my dream since a very young age to compete at an Olympics.
"I'm doing it for myself and my dad. It was both our dreams from a very young age.
"I always wanted to do it and Dad was so supportive of everything.
"It would make it extra special to do it for him."
When news of the insensitive tweet spread, Rileyy-69 attempted to apologise.
He tweeted: "@TomDaley1994 I'm sorry mate i just wanted you to win cause its the olympics I'm just annoyed we didn't win I'm sorry tom accept my apology."
He later added: "please i don't want to be hated I'm just sorry you didn't win i was rooting for you pal to do britain all proud just so upset."
Deputy Mayor of the Olympic Village Duncan Goodhew, a gold and bronze medallist in swimming at the Moscow Olympics in 1980, described the behaviour of the Twitter troll as "appalling".
"It is appalling that people behave that way. Becky Adlington, in fact, suffered probably far worse abuse, as well, if you remember the kerfuffle some years ago," he told ITV's Daybreak.
"I suppose that social media in one sense is fantastic, but turned the wrong way round it is very, very personal and it destroys people's lives.
"So I think people should be much more careful about what they say."