WOODBURY - The FBI and Homeland Security Department have warned security officials in a memorandum yesterday that al-Qaida is now thinking about surgically implanting explosives inside people to get bombs on planes.

Officials say there is currently no specific plot, but they say the terrorist organization is trying to recruit a surgeon to implant the explosives in terrorists' bodies.

"We see this as the latest iteration, or the evolution of what terrorist groups are trying to do to circumvent our security layers," says Transportation Security Administration (TSA) official John Pistole.

The TSA says it would be difficult even for full-body scanners to spot plastic explosives inserted into a body.