A terrifying flaw in London's Olympic Park security was exposed after a worker smuggled a fake bomb inside.
He sailed past two checkpoints without being stopped Saturday, just hours before the Olympic Stadium officially opened.
The worker photographed himself with the dummy Semtex device inside a heavily-guarded ring of steel, just yards from the showpiece Olympic Stadium.
The device looked like a bomb, was wired like a bomb and has a timer like a bomb. But incredibly the worker carrying it in his digger was simply allowed to drive in unchallenged.
The breach was a taste of Britain's worst Olympic nightmare — that extremists such as al Qaeda could stage a terror spectacular to stun the world.
The Sun earlier passed the worker the package after he called the newspaper worried about gaping security loopholes at the East London site.
Astonishingly, guards failed to spot anything as he drove through with it unnoticed, just 24 hours before 40,000 people flocked there for the opening of the Olympic Stadium 82 days before the Games.
Once inside the man openly took photos of the package next to apartments in the athletes' village, which will soon house up to 17,000 of the world's top competitors.
During his 25-minute tour, he also took the "bomb" past the landmark velodrome and posed with it in front of the Olympic Stadium.
When shown the evidence Saturday night the Home Office said: "LOCOG (the Games organizers) are responsible for the security of the Olympic Park. We have asked them to look into this incident and report back to the Home Secretary urgently."
The bill for security at the Olympics is $1.61 billion, and there are 23,700 guards, boosted by nearly 14,000 troops at key times. The Olympic Park is surrounded by an 11-mile (17.7-km) electric fence costing $108 million.
But one of the biggest fears has always been that terror cells may use "clean skins," people with no criminal or extremist links.
