By Sophie Tanno, CNN(CNN) — An unidentified flying object hit a a cargo plane at a German airport on Wednesday, as the discovery of a drone carrying an explosive device caused disruption and the suspension of flights. An airport staff member discovered the drone in a secure area of the cargo flight operations near the airport’s south runway, according to a statement from state police in Saxony. A bomb disposal robot was deployed as part of the investigation, and the detonator attached to the drone was removed. A second, unidentified flying object, collided with a cargo plane after the aircraft aborted its landing due to the runway being closed, police said. Flight operations were temporarily suspended following the discovery of the drone just before midnight.