At least 12 people were killed and a dozen others injured as an overspeed passenger van overturned early Sunday morning in Karachi in southern Pakistan, reported local TV channel Express.

According to local media reports, the accident took place at about 3:00 a.m. local time Sunday morning when a passenger van carrying an estimated 30 people overturned on the Makran Coastal Highway in the section of Karachi.

One local media report said that 15 were killed and 18 others injured in the accident and six of the injured people were in serious condition.

All the injured people have been shifted to nearby hospital following the accident, said traffic police, adding that the accident was due to overspeed of the van.