The Islamic State had claimed responsibility for the attack in Quetta in Balochistan province of Pakistan, which killed 20 people and left 48 more injured, Pakistan based Dawn reported.
Quoting group’s Amaq news agency, the report said the group released a photograph of the bomber along with his name on Saturday after the attack that targeted Shia Muslims.
On Friday, however, a little known faction of the Taliban had claimed responsibility for the blast, saying it collaborated with Lashkar-e-Jhangvi (LeJ), which has been behind numerous attacks on the Shia community in Pakistan.
Pakistani officials deny Islamic State group (ISIS) is present in the country, but the group has claimed a number of attacks in the past.
Quetta, the capital of southwestern Balochistan province, the country’s largest and poorest region, is rife with ethnic, sectarian and separatist insurgencies, and populated by Ethnic Hazara population who are mostly Shia.
The Hazara Shia community has organised a sit-in against the persecution of the minority group at Quetta’s Western Bypass which has now entered the third day.