FBI Probing Planted Explosive Orlando, Fla., August 20 (AP) -- Two explosives were planted in a professor's suitcase to test airport security measures in Amsterdam, The Netherlands, and were discovered when he arrived in Orlando, officials said Saturday. The professor, Paul Holloway of the University of Florida, arrived at Orlando International Airport on Friday afternoon and found his suitcase had been torn, said Brian Kensel, a special agent with the FBI in Tampa. He alerted Northwest Airlines security officials who emptied his bag and found the two devices. No detonators or fuses were with the materials, posing no danger to passengers, Kensel said. "We were satisfied that he was unaware of its presence before it was found at the airport," he added. Holloway had been attending a professional conference in Finland and had traveled through Detroit, Michigan, before arriving in Orlando, Kensel said. He had stopped in Amsterdam on the way, and that was where the device was placed, said Kathleen Bergen, spokeswoman with the Federal Aviation Administration in Atlanta. "It was part of a test," she said. "Basically the bag was inadvertently loaded on board with the explosives still inside." Kensel said such security measures were normal for Europe. "Particularly in Europe, there are grave concerns about security issues," he said. "As a result, they do conduct various security programs regularly. This was part of a routine check of their own security systems. "The bag got away from them basically," he said. -----