Pakistani authorities launched a hunt on Monday for militants behind a suicide bomb that killed at least 65 people.

Most of the victims of the bomb attack at a park in the eastern city of Lahore on Sunday evening were women and children enjoying an Easter weekend outing.

"We must bring the killers of our innocent brothers, sisters and children to justice and will never allow these savage inhumans to over-run our life and liberty," military spokesman Asim Bajwa said in a post on Twitter.

Officials said at least 65 people were killed and about 300 wounded. The death toll was expected to rise.

Sharif's office condemned the blast as a cowardly act and said a response had been ordered, without elaborating.

PHOTO CAPTION

Rescue workers move a body from the site of a blast outside a public park in Lahore, Pakistan, March 27, 2016.

Source: Reuters