Swiftly deleting abusive tweets may save offenders from being brought before court, the country's leading prosecutor has said.

Keir Starmer, director of public prosecutions, said it was "relevant" for police to consider whether an offending tweet had been quickly deleted from the micro-blogging site.

Speaking to Sky's Dermot Murnaghan, he said he was holding a three-month consultation about the plan.

Libellous tweets, or messages which broke court orders or were threatening, would still face prosecution regardless, he added.

Starmer said: "There's a lot of stuff out there that is highly offensive that is put out on a spontaneous basis that is quite often taken down pretty quickly and the view is that those sort of remarks don't necessarily need to be prosecuted."

He added: "I think that if there are too many investigations and too many cases coming to court then that can have a chilling effect for free speech.

"This is about trying to get the balance right, making sure time and resources are spent on cases that really do need to go to court, and not spent on cases which people might think really would be better dealt with by a swift apology and removal of the offending tweet.

"This is not a get-out-of-jail card but it is highly relevant. Stuff does go up on a Friday and Saturday night and come down the next morning.

"Now if that is the case a lot people will say that shouldn't have happened, the person has accepted it, but really you don't need a criminal prosecution. It is a relevant factor."

But he said Twitter was not a place where people could "go and say what they like" without thinking of the circumstances.

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