Four people were killed and another was seriously injured when two pickup trucks collided head-on in Nakhon Ratchasima early Sunday morning.

A Nissan carrying four area residents and a Toyota with a single occupant met at a curve on Noen Sung-Kham Sakae Saeng Road in Noen Sung district.

Both vehicles were reported to be travelling at high speeds.

Police were checking the names of the deceased and injured before contacting relatives.