An explosion rocked Afghan capital Kabul on Thursday, killing at least four people.

The blast happened in Qalai Nazir area, Police District 6 of the city. The area houses also a news agency and a cultural centre.

Nai, a media advocacy group, said that the attack targeted Afghan Voice news agency. Mujib Khelwatgar, CEO of the group, said that the attack left many casualties.

Najib Danish, a spokesman for Interior Ministry, said that the blast was likely triggered by a suicide bomb. He said that most of the casulaties were civilians.

The blast left at least 13 killed and 18 injured, Ismail Kawoosi, a spokesman for Public Health Ministry.

There was no immediate claim of responsibility for the attack.