The blast ripped through a busy street close to the headquarters of Frontier Constabulary (FC) in Quetta, capital of the province.
Pakistan's Chief of Army Staff Gen Syed Asim Munir visited Balochistan on Saturday amid clashes in the restive province in which 18 security personnel and 23 terrorists have been killed in the last 24 hours. The army chief was given a comprehensive brief on the prevailing security situation in the province and offered prayers at the funeral of the slain soldiers. He also visited the injured soldiers in the Combined Military Hospital Quetta. The military said the terrorists were killed in different areas of troubled Balochistan in the last 24 hours. Terror attacks have increased since the banned militant Tehreek-e-Taliban Pakistan group broke a fragile ceasefire agreement with the government.
The explosion ripped through the provincial capital Quetta's railway station as passengers gathered on the platform before the scheduled departure of the Jaffar Express to Peshawar.
As part of the PML-N and PPP alliance, Shehbaz Sharif, the younger brother of former premier Nawaz Sharif, is expected to become Pakistan's next prime minister.
The dead were identified as belonging to Punjab province. No group has claimed responsibility for the attack so far.
The army said that three terrorists were "neutralised while entering the base while the remaining three terrorists have been cornered/isolated due to timely and effective response by the troops".
Cadets at a police training academy in Pakistan awoke to the horror of suicide bomb-wielding terrorists in an attack late Monday that killed 61 and injured 117.
A powerful suicide blast ripped through a mosque in Pakistan's restive Balochistan province on Friday, killing at least 52 people and injuring over 50 others gathered to celebrate Prophet Muhammad's birthday, authorities said.