Anti-terror police release three

Security has been high in the capital since Thursday's events

Three men arrested at Heathrow airport under anti-terrorism laws have been released without charge.

The men - all British nationals - were arrested on Saturday night under the Prevention of Terrorism Act.

Brian Paddick, the Deputy Assistant Commissioner of the Met, said the arrests had been "routine".

"These arrests were not made as a result of information about the explosions that happened in London," Mr Paddick said.