URUMQI - Two people died and 29 were injured, including five who sustained serious injuries, when a sleeper bus hit a truck in northwest China's Xinjiang Uygur autonomous region Saturday morning, local police said.

The bus carrying 44 passengers hit a truck on the Korla-Kuqa Highway in Bayingolin Mongol autonomous prefecture at around 7 am Saturday, said the prefecture police.

The bus was on its way from the provincial capital Urumqi to Shaya county in Aqsu prefecture in western Xinjiang.

Traffic on the highway was temporarily disrupted, but resumed around 10 am after everyone was pulled out of the bus, police said.

An investigation into the cause of the accident is under way.