Russian health officials say two buses have collided in the far east of the country, killing at least 16 people and injuring more than 50 others.

The Investigative Committee, the nation's top investigative agency, said Wednesday's collision occurred on a highway linking Khabarovsk, which sits on the border with China, and Komsomolsk-on-Amur. The agency has opened a probe into the alleged violation of traffic rules.

Prosecutors said the driver of one of the buses drove into an incoming lane to bypass construction vehicles repairing the road and lost control of the vehicle.

Russia's Health Ministry said 56 people were injured. Ambulances and helicopters have rushed to the site to evacuate the wounded, more than 20 of which were in grave condition.