The Daish group on Monday claimed it was behind a suicide bombing that tore through a Pakistani hospital, killing at least 70 people, the Daish-linked Amaq news agency said.

"A martyrdom bomber of the Islamic State detonates his explosive belt on a group of personnel belonging to the Ministry of Justice and the Pakistani Police in the city of Quetta," Amaq said.

The bomber struck a crowd of some 200 people gathered at the Civil Hospital in the Balochistan provincial capital of Quetta after the fatal shooting of a senior local lawyer earlier in the day.

READ: Pakistan hospital bombing: Death toll in Quetta rises to 45