German police raised the alarm at an airport overnight after an explosives-laden drone was found near a Ukrainian cargo plane and another aircraft collided with an unknown flying object mid-air nearby before landing safely. "Shortly before midnight, an unidentified flying object was sighted near Leipzig-Halle Airport, prompting the diversion of several aircraft -- including a passenger plane -- to other airports", they said in an initial statement. News site Der Spiegel reported that police classified the payload fitted to the four-rotor drone as an "improvised explosive and incendiary device". Police later confirmed that "a suspected second unidentified flying object collided with a cargo aircraft" and that "minor damage to the aircraft was discovered after it landed in Hanover". A police counter-terrorism unit hunting for the one or more drone pilots urgently called for information from the public about suspicious sightings near the airport.