Pakistan suicide bombing death toll rises to 56

The Islamic State militant group claimed responsibility for the attack on a gathering of the Jamiat Ulema Islam-Fazl (JUI-F) party, which is known for its links to hardline Islamists but which condemns militants seeking to overthrow the government.

The party is allied with Prime Minister Shehbaz Sharif's ruling coalition, which is preparing for a general election that must be held by November.

Sharif denounced the blast, which came after months of political tension and an economic crisis, as an attack on the democratic process.

Islamic State's Amaq news agency said in a claim for the attack on its Telegram channel that democracy was hostile to Islam.

"The attack comes in the natural context of the ongoing war waged by the Islamic State against 'democracy' as a regime hostile to true Islam and in conflict with its divine law," the news agency said.