More than 30 people were killed and dozens more injured after blasts tore through a Shia mosque during Friday prayers in the Afghan city of Kandahar.
Pictures from inside the Bibi Fatima mosque show shattered windows and bodies lying on the ground, while other worshippers try to help.
The BBC has been told it was a suicide bombing.
A local reporter quoted by Reuters news agency said eyewitnesses described three suicide attackers.
One reportedly detonated their device at the door of the mosque, with two more setting off theirs inside the building.
“The firing started after we ended the prayers,” a man named Ahmadullah told AFP news agency. “Then two, three explosions took place. We were thrown towards the window. Many people, martyred [killed] or wounded, were laying there.”
Friday prayers are the busiest congregation of the week, and the building was full of worshippers at the time. At least 15 ambulances were at the scene afterwards, an AFP journalist said.
Taliban special forces have secured the site and have asked people to donate blood to help the victims, Reuters reports.
Read more at BBC