Just in as a suicide bomber killed at least more than 30 people inside a Shia mosque in the Afghan capital Kabul, who are there for a prayer officials say.
An eyewitness report by the BBC that the scene at the Imam Zaman Mosque, in the west of the city, "looks like a frontline".
According to an undisclosed source, the attacker is reported to have opened fire at worshippers who were gathered for Friday prayers, before detonating the bomb.
A spokesman for the Afghan interior ministry said investigators were working at the scene to determine the "nature of the explosion," AFP news agency reports.
Friday's attack comes just days after police in Kabul said they had nabbed a suspected suicide truck bomber, averting a major incident.
It was also reported that in August, more than 20 people were killed in a bomb attack against worshippers in Kabul.