Quetta: At least four people were injured as a grenade blast rocked Pakistan's Quetta city on Sunday, media reports said.

Balochistan Health Department media coordinator Waseem Baig later confirmed in a media talk that four people had sustained injuries in the incident, reports Dawn News.

Balochistan Chief Minister Abdul Qudoos Bizenjo has directed  police to continue intelligence-based operations against terrorists and “leave no stone unturned in taking the enemies of peace to task”.

He further instructed that the best medical facilities be provided to the injured.