At least four people were killed and 30 others injured when a passenger bus turned turtle due to overspeeding here on Wednesday.

Rescue sources said that a driver of a recklessly driven passenger bus lost control of the steering of the vehicle and it overturned in the Mananwala area of Sheikhupura.

Four people were killed on the spot in the accident while 30 others were injured. The bus driver fled the scene.

The bodies and injured were shifted to the hospital where the condition of some wounded people was stated to be critical.

The police impounded the bus and after registering a case against the driver have started an investigation.