Man sprints onto Heathrow runway in security breach

A man sprinted onto a runway at London's Heathrow airport yesterday, the day before Queen Elizabeth was due to open its giant new Terminal Five, in the second major security breach in less than a month.

Police arrested the man and blew up his bag in a controlled detonation but found no bomb, a spokesman said.

The world's busiest international airport has been the target of protests from environmentalists angered at the opening of the new terminal and plans to boost traffic with the addition of a third runway and a sixth terminal.

Last month protesters opposing the expansion plans breached the airport's security to unveil a banner on top of a parked passenger jet. Others chained themselves to the roof of Parliament. Organisers have threatened more action.