Five police officers have been taken to hospital after being mauled by a dog during a raid.
The constables were attacked by a "pit bull-type" animal as they attempted to arrest a suspect in east London, Scotland Yard said.
A dog unit and firearms officer were called before the dog was "contained and subsequently shot dead", the force added.
The man - in his 20s - was arrested and is in custody.
More top news
Nearly a fifth of couples are in "distressed" relationships where they argue regularly or consider divorce, according to a new report.
Ministers agree £7.8 billion bailout deal for recession-hit Greece after an 11-hour Brussels meeting.
There will be outbreaks of rain in central parts of the UK, while the rest of the country will remain dry.