A german airport suspended all flights for over four hours on saturday after a man drove a car through the security perimeter, according to police. No one was injured during the incident, which occurred at Hannover Airport in northern Germany. Police said the man, who is in his mid-20s but remains unidentified, tested positive for amphetamines and cocaine. He drove a Poland-registered car through a gate after reportedly trying to follow a landing plane operated by Greek airline Aegean. Cars stopped the vehicle and officers overpowered the driver. Bomb disposal experts examined the car but found no dangerous objects. The incident took place about a week after police tightened airport security over terrorism fears, BBC News reported. German police reported that the man's motive was still undetermined, but that they do not believe the incident was terror-related.