A massive explosion rocked a highly secure diplomatic area of Kabul on Wednesday morning, killing 64 people and wounding as many as 320, sending a huge plume of smoke over the Afghan capital.

The target of the attack — which officials said was a suicide car bombing — was not immediately known, but Ismail Kawasi, spokesman of the public health ministry, said most of the casualties were civilians, including women and children.

Associated Press images from the scene showed the German Embassy and several other embassies located in the area heavily damaged in the explosion. It wasn’t known if any foreign diplomats were among the casualties.

No group immediately claimed responsibility for the blast. Both the Taliban and the Islamic State group have staged large-scale attacks in the Afghan capital in the past.

A statement from the Ministry of Interior Affairs says it “condemns in the strongest terms the terrorist attack” that killed so many, including women and children. Continue reading.