A car bomb tore through an unprecedented cease-fire between Afghan forces and Taliban militants on Saturday, officials said, killing at least 20 in the eastern province of Nangarhar, NBC News reported.
The blast struck a gathering of Taliban and Afghan security officials held amid a cease-fire to mark the end of the Ramadan fasting season. It's believed to have killed civilians, Afghan troops and members of the Taliban, according to the spokesman for the governor of the city of Jalalabad.
No one immediately claimed responsibility for the attack, but ISIS has a strong presence in the region. The cease-fire does not include al Qaeda or the Islamic State group.
"The incident has nothing to do with the Taliban," spokesman Zabihullah Mujahid told Reuters. "The area where the blast happened is close to our front line. Some of our members went there to celebrate Eid. Our members suffered casualties."