At least 14 people were killed and dozens injured when a passenger wagon collided with a bus in Balochistan's Mastung district on Saturday, officials said.

Levies officials said the driver of the van lost control due to over-speeding and collided with a bus coming from the opposite side.

The injured, which include women and children, were rushed to Civil Hospital Quetta for treatment. Fourteen people have so far died in the incident and 30 have been injured, Waseem Baig, a spokesman for the hospital said.

The condition of six injured was said to be critical and doctors fear an increase in the number of dead. An emergency was imposed in the hospital following the incident.

Poor roads, badly maintained vehicles and reckless driving are cited as common reasons behind accidents in Pakistan.

Around 9,000 road accidents are reported to the police every year since 2011, killing more than 4,500 people on average, according to figures from the Pakistan Bureau of Statistics (PBS).