At least 23 people were killed and several others were others injured when a bus overturned at a sharp turn on the M8 motorway in Khuzdar district and fell into a ravine before dawn on Friday, according to the medical superintendent of Khuzdar Civil Hospital, Ismail Bajoi.

Earlier, Khuzdar Deputy Commissioner (DC) Major (retd) Bashir Ahmed confirmed 18 deaths.

The deputy commissioner told Dawn.com that the bus was carrying pilgrims from Wadh in Balochistan to Dadu in Sindh. He added that 15 of the victims died on the spot, while three others succumbed to their injuries during treatment at the hospital.

Levies personnel and rescue workers shifted the bodies and the injured to the hospital.

The DC said two brothers and four others of a family were among the deceased, adding that the bodies had been sent to the victims’ hometowns via ambulances after the completion of medico-legal formalities.

According to DC Ahmed, the pilgrims were residents of Dadu who were returning home after attending the annual urs at Sufi saint Abdul Qadir Naqshbandi’s shrine in Wadh.

He said the bus driver lost control of the vehicle while making a sharp turn, adding that the bus was overcrowded and several pilgrims were sitting on its roof.

Ahmed said the bus driver was among the injured and some of them were in critical condition.

"There is not a single passenger who does not have an injury because of the bus accident,” Ahmed told the AP by phone.

Separately, Imam Bakhsh, one of the injured passengers, told AP by phone that the passengers had repeatedly warned the driver to drive more carefully. He blamed the driver for the accident, saying that he was enjoying music and driving recklessly.

However, Levies official Imran Ahmad, said while the driver’s negligence was the apparent cause of the accident, officials were still investigating the matter.

The accident has come as the grim reminder of a similar incident last year, in which five of a family were killed and 24 others were injured as a bus carrying pilgrims overturned near Shah Noorani crossing in Lasbela district, Balochistan.

The bus, carrying over 30 pilgrims, was going to the shrine of Hazrat Bilawal Shah Noorani in the Wadh area of Khuzdar district from Karachi. It had also overturned at a sharp turn in the hilly area near Shah Noorani crossing.

The bus overturning had left five people dead on the spot.

With additional input from AP.