Six children among those killed in accident in Babusar Pass, in the mountainous region of Gilgit-Baltistan.

More than 20 people have been killed in a passenger bus crash on a mountainous road in northwestern Pakistan, police said.

The accident on Sunday happened in the Babusar Top area, bordering Khyber Pakhtunkhwa province with Gilgit-Baltistan.

Local media quoted Faizullah Firaq, spokesman for the Gilgit-Baltistan’s government, as saying that among the 26 dead were members of Pakistan’s army. He added that a dozen people were injured and being tranferred to a local hospital in a helicopter.

News agency reports gave a slightly lower death toll: AFP reported at least 23 dead, while The Associated Press put the number at 25.

Local administration official Aurangzeb Haider told AFP six children were among the dead, while senior police official Zaibullah Khan said six of the injured were in a critical condition.

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Abdul Wakil, a local police officer, said the bus was travelling from Skardu city in Gilgit-Baltistan, which is at an elevation of nearly 2,500 metres (8,200 feet) above sea level, to the city of Rawalpindi.

Gilgit-Baltistan is a mountainous region that is home to some of the world’s highest peaks. The main ranges are the Karakoram and the western Himalayas.

Wakil was quoted as saying by AP that rescuers were facing difficulties in the remote mountainous terrain due to a lack of necessary equipment and resources.

Pakistan has a poor traffic safety record, with frequent fatal accidents blamed on reckless driving, bad roads and shoddily maintained vehicles.

Last month, a speeding bus fell off a mountainous road into a river in the northwest, killing 24 passengers.