The type of the explosion is not clear so far which has reportedly taken place in the vicinity of Shahr-e-Naw area.
A security official confirmed that an Improvised Explosive Device (IED) was planted inside a restaurant in Sherpoor area of the city.
No group has so far claimed responsibility behind the incident.
This comes as at least 64 people were killed and 347 others were wounded after a suicide bomber detonated a vehicle packed with explosives in Pul-e-Mahmood Khan area of the city earlier today.
The explosion triggered gun battle between the Afghan security forces and the remaining militants who had taken position inside a compound used by the elite security forces.