Eyewitnesses saw a powerful flash before the fall of a Boeing 737-800 in the southern Russian city of Rostov-on-Don, a video posted on the web shows.

The first video recording of the crash of presumably Boeing 737-800 in Rostov-on-Don was posted on the internet.

The recording shows that right before the fall of the jet, a powerful flash occurred, which was followed by an explosion.

The video was probably shot by a surveillance camera on a city street.

A total of 61 people, including the crew, who were on board a Boeing 737-800 passenger jet bound from Dubai, were killed in the crash in Rostov-on-Don airport, emergencies services told TASS.

"According to specified information, there were 55 passengers and seven crew members on board," a source said.

"According to preliminary data, the jet bound from Dubai crashed during runway approach," he said.