At least 15 dead in Pakistan mosque suicide bombing

A little background can be found on Arabnews.

Quote: "Daesh issued a statement on Friday night claiming responsibility for the attack, saying that it had targeted the Afghan Taliban. It was carried out by a suicide bomber, the group said, named Abu Jarrah Al-Balouchi. Two Afghan Taliban members confirmed that the mosque and an attached religious school belonged to Taliban chief justice Sheikh Abdul Hakeem, who is considered an influential leader in the organization’s hierarchy. The Taliban said that Hakeem’s brother was killed in the explosion and his son badly injured. “The brother of Sheikh sahib and four or five other people have embraced martyrdom. Maulvi Abdul Ali, son of Sheikh sahib, is critically injured,” a Taliban leader said in an audio message in the Pashto language that was sent to Taliban members, a copy of which was obtained by Arab News.

However, Taliban spokesman Qari Muhammad Yousaf said: “None of the Taliban leaders was present in the mosque. No meeting was taking place there. Any reports suggesting so are untrue.”