It was not instantly clear what precipitated the accident as authorities mentioned they had been trying into a number of potentialities, together with a technical malfunction.
Authorities didn’t point out terrorism as a potential trigger.
“9 persons are at the moment within the metropolis’s clinics… 4 folks died on the spot,” the Moscow metropolis corridor mentioned in a press release on the web site.
Police had been additionally giving the determine of 4 killed, revised down from earlier statements which mentioned the accident precipitated 5 deaths.
Footage broadcast on nationwide tv confirmed the bus driving onto the pavement after which down the steps of the underpass, working over a number of pedestrians earlier than coming to a cease.
Moscow police mentioned in a press release they had been trying into two potential causes — the motive force dropping management of the car and a technical downside with the bus.
“The driving force of the bus started motion after which modified his trajectory, which resulted within the bus happening into the pedestrian underpass,” the assertion mentioned.
“The driving force has been detained. Police workers are working with him,” the assertion mentioned.
“In line with the motive force, the bus was parked and instantly started to maneuver by itself,” mentioned a press release by the Russian Investigative Committee, which probes main crimes.
“Regardless of his makes an attempt to cease the bus, the breaking system didn’t work and the bus continued shifting,” it mentioned.
Investigators mentioned they had been questioning witnesses and plan to look at car documentation and order medical examination of the motive force.
The accident occurred round three pm (1200 GMT) close to Moscow’s Slavyansky Boulevard metro station, a prestigious residential space close to one of many capital’s foremost avenues.
Sirens had been blaring across the metro station, with authorities making ready to drag the bus out of the underpass, an AFP correspondent on the scene mentioned.
The underpass and surrounding space had been cordoned off and a number of other black physique baggage may very well be seen on the pavement, partially coated with falling snow.
The emergencies ministry mentioned helicopters had been dispatched to the scene to assist evacuate the victims.
“There are lifeless and wounded,” tweeted Moscow mayor Sergei Sobyanin. “We’re offering emergency help,” he mentioned, providing condolences to households of the victims.
Sobyanin additionally visited the scene, telling journalists he had ordered a full inspection of your complete Moscow bus fleet.