Air Serbia passenger flight flying from Lebanon to Serbia is reported to have been carrying the cargo package with missiles.
N1 television reported that the package with two guided armor-piercing missiles was discovered by a sniffer dog after an Air Serbia flight from Beirut landed at Belgrade airport on Saturday.
Serbian authorities have launched an investigation based on the reports, AP reported Monday.
Serbian media say documents listed the final destination for the AGM-114 Hellfire missiles as Portland, Oregon. The American-made projectiles can be fired from air, sea or ground platforms.
N1 reported Sunday that Air Serbia is helping in the investigation. The Serbian flag carrier says "security and safety are the main priorities for Air Serbia".