Interfax news agency reports that a Malaysian jet has crashed in eastern Ukraine, near the Russian border. The Malaysian Airlines passenger plane had 295 people on board and was on its way from Amsterdam to Kuala Lumpur.
Anton Gerashenko, an adviser to Ukraine's Interior Minister, wrote on Facebook that the plane was hit by a missile fired from a Buk Launcher over the country's east, the Associated Press notes.
Malaysia Airlines confirmed it had lost contact with flight MH17 and that it's last position was over Ukrainian airspace.
A Russian aviation industry source told Reuters that the plane did not enter Russian airspace when expected.
Ukraine's east has seen heavy fighting between the country's military and separatist in recent days. Earlier on Thursday, the Ukrainian military claimed Russian jets had shot down a Ukrainian warplane late Wednesday night.