Police carrying out security tests ahead of the Olympics managed to smuggle a fake bomb on to the main site, says an AP report.

A spokesman for the Olympic Delivery Authority (ODA) said in the report: "Testing is standard practice in all major security operations. Such tests have a key role in developing our capability to ensure that London 2012 is safe and secure and that we are best prepared to detect potential threats before and during the Games."

According to the report, the Ministry of Defence has confirmed that 13,500 military personnel, more than the 10,000 that were deployed to Afghanistan, will be part of the 23,700 security force for the Games. The deployment across all military services includes 3,500, rising to 7,500, who will provide venue security. Around 5,000 servicemen and women will support the police and other civil authorities, providing specialist capabilities such as bomb disposal and dog teams. Another 1,000 will provide logistical support.