At least 11 people have been injured in an ongoing attack on the offices of international aid agency Save the Children in Afghanistan.
An explosion took place outside the organisation’s compound in Jalalabad, authorities said. Gunmen then entered the building.
Local media have reported children at a nearby school were seen running from the area as gunfire was heard.
The attackers are unknown but Jalalabad is often targeted by Taliban militants.
It comes days after Taliban gunmen stormed a luxury hotel in Kabul killing at least 22 people, mostly foreigners.
At about 09:10 local time (04:40 GMT) on Wednesday, a suicide attacker detonated a car bomb at the entrance to the Save the Children compound, said Ataullah Khogyani, a provincial government spokesperson.
Afghan TV showed a huge plume of thick black smoke rising from the compound and at least one vehicle on fire.
“A group of armed men then entered the compound. So far 11 wounded people have been brought to hospitals,” Mr Khogyani said told AFP news agency.
Clashes between the attackers and security forces are still ongoing, he said.
Save the Children carries out education, healthcare and protection work for Children in Afghanistan.