The attack happened when nearly 100 passengers were waiting for a train to travel to the garrison city of Rawalpindi from Quetta, the capital of Balochistan province.

The attack happened when nearly 100 passengers were waiting for a train to travel to the garrison city of Rawalpindi from Quetta, the capital of Balochistan province, according to Hamza Shafqaat, a senior government administrator.

A banned ethnic separatist group in a restive province claimed responsibility for the deadly attack in Quetta, the provincial capital.