Militants have raided an education department building in eastern Afghanistan, trapping workers inside. It's the third major attack in less than two weeks in the increasingly volatile region on the border with Pakistan.
Security forces battled to free workers from a Jalalabad education department compound on Wednesday morning after gunmen launched an assault on the building, officials said.
At least 11 people were reported killed, with about 10 people wounded.
Nangarhar provincial police chief Ghulam Sanayee Stanekzai said one of the militants detonated an explosives vest, while a second attacker was shot and killed by security forces.
"A few offices and rooms in the building were burned down as a result of the attack," he said.
US and Afghan forces are engaged in operations against the group, but the recent bombings have underlined the instability that persists in many parts of the country, particularly near the border with Pakistan.
Wednesday's attack comes as President Ashraf Ghani seeks greater commitment to the conflict from NATO members at a summit in Brussels. There are currently around 14,000 US troops in Afghanistan as part of a NATO mission to support and train local forces.