LONDON, March 13 (UPI) -- A man who climbed a fence and ran onto a runway at Heathrow International Airport outside London Thursday afternoon triggered a security alert.
The man was arrested after he sprinted into the path of a Boeing 777 belonging to Emirates Airways, The Times of London reported. Authorities destroyed the man's knapsack in a controlled explosion. Police said it contained no explosives.
Heathrow, west of London near the Thames River, has been the subject of many protests in recent weeks because of plans to expand the airport, including adding another runway.
Queen Elizabeth is scheduled to open a new terminal building Friday.
Last month, a group of Greenpeace members held a protest at the airport that included climbing on a Boeing 777 and displaying a banner. Members of another group, Plane Stupid, got onto the roof of Britain's Parliament last month.
