The sound of the second explosion was heard from Shahr Naw area of Kabul city few minutes after an explosion took place in West of the capital.

A security source says several people are feared dead or wounded in the attack in Shahr Naw area of the city but there are no reports regarding the exact number.

The source further adds that an operation is underway to eliminate the assailants.

Kabul police spokesman Hashmat Stanikzai confirmed the blast in the Police District 4 of the city but did not elaborate further.

This comes as the eyewitnesses in Dasht Barchi area are saying that a blast has taken place close to the security compound of the area and sporadic gunfire can also be heard.