BANGKOK, May 26 (Xinhua) — A bus hit a 10-wheel truck early Saturday injuring 28 in central Thailand, according to local reports.

The accident happened in Phichit province when a bus with Bangkok license plate was heading for northern Thailand's Phitsanulok from Bangkok. The bus crashed into a truck carrying steels. The two vehicles veered off and fell into a road ditch.

Twenty-eight people were injured and hospitalized, according to reports.

One of the injured said the driver drove over speed limits for several times. She said most of the passengers were sleeping when the accident happened and woke up in shock, only to find themselves stuck in the bus.

The cause of the accident is under investigation.

Inter province bus accidents take up most of road accidents in Thailand. Fatigue driving and speeding are the main causes.