
Russia has launched a criminal probe to investigate the cause of failed rocket launch Soyuz on Thursday.
The launch had a problem with the booster (rocket) a few seconds after the first stage separation, the voice-over on a NASA live stream from mission control in Houston said.
The two crewmen in the rocket were forced to make an emergency landing in Kazakhstan following the lift-off to the International Space Station.
NASA rookie astronaut Nick Hague and second-time flyer Aleksey Ovchinin of the Russian space agency landed without injuries, the Interfax news agency reported.
(With inputs from agencies)