A plane crashed in the Moscow region on Sunday, killing all people on board, Russian news agencies said, citing sources in the emergency services. The Emergencies Ministry said it has sent crews to the reported crash site. The reports said the plane was an An-148, a regional jet belonging to Saratov Airlines. The plane which had taken off from Domodedovo Airport had 71 people aboard, 65 passengers and six crew members. It went missing from radars less than 10 minutes after taking off from the airport. Trackers showed that it had reached an altitude of around 6,400 feet. The flight was heading to Orsk in Orenburg Oblast, near the southern Russian border with Kazakhstan. It was not immediately clear what caused the crash. The Russian Transport Ministry was considering various possible reasons, including weather conditions and a pilot error, Interfax said, Reuters reported.