Officials have confirmed at least 20 people were killed in a double-bombing on Wednesday night in Qala-e-Nazer in PD6 in Kabul.

The Kabul police chief's spokesman told TOLOnews that a second explosion targeted first responders at the scene of Wednesday night's bombing in the city. 

Officials confirmed the first explosion, just after 6pm, was a suicide bombing and the second, about an hour later, had been a car bomb. 

Sources said that the second bombing targeted police and civilians, including journalists, who had gathered outside the Moalem wrestling club in Qala-e-Nazer in PD6, which had been targeted about an hour earlier by a suicide bomber.