Brown's young son behind Twitter gobbledegook

Sarah Brown's Twitter followers were baffled earlier when the PM's wife "tweeted" a random set of letters.

Fellow tweeters suggested a cat might have got to the keyboard or she may have accidentally sat on her phone.

But it appears one of her young sons got to the keyboard as, an hour later, Mrs Brown explained "junior tweet interference" was to blame.

Mrs Brown's "tweets" on campaigning issues and visits have proved popular, with 987,460 followers.

But on Tuesday afternoon viewers were greeted by the short message "fvdfzsrsazxzzxcvbnmadgfhjjkqwrtyuuuiop".

Mrs Brown posted a new message shortly after: "In future I will turn my computer off when I am not using it - to save energy and avoid junior tweet interference."

Downing Street confirmed hackers were not to blame, it was one of the Browns' two sons - John and Fraser, aged six and three - although a spokesman declined to say which.