Twenty people were killed and dozens injured in a blast that ripped through Quetta's Hazarganji sabzi mandi on Friday morning, authorities said.

Eight Hazara, an FC official and two children were among the dead. At least 48 others, including three security personnel, were injured in the blast, police and provincial authorities said.

DIG Quetta Abdul Razzaq Cheema told the media that the blast, which shook the Hazarganji sabzi mandi at around 7:35am, was caused by an improvised explosive device (IED) that had been hidden among vegetables in the market.

Balochistan Minister for Home Mir Zia Ullah Langau said in a press conference later that initial investigation suggested it was a suicide bombing, and that it did not target any particular community.

He vowed that justice would be delivered and the perpetrators would be taken to their logical conclusion. 

"I was loading a small truck and I heard a huge bang and it seemed as if the earth beneath me had shaken and I fell down," Irfan Khan, a labourer, told AFP from his hospital bed.

"The atmosphere was filled with black smoke and I could not see anything, I could hear people screaming for help and I was also screaming for help."

He said the air was "filled with the stinging smell of burnt human flesh".

Buildings located nearby were also damaged in the blast, police said. 

The injured were being treated at Bolan Medical Complex. 

Violence in Pakistan has dropped significantly since the country´s deadliest-ever militant attack, on the Army Public School in Peshawar in 2014 that left more than 150 people, most of them children, dead.

Prime Minister Imran Khan condemned the blast in Hazarganji and summoned a report on the incident. 

The premier expressed his grief at the loss of innocent lives, and directed the authorities to ensure the best medical treatment for the injured. 

Moreover, President Dr Arif Alvi condemned the blast and expressed sorrow over the loss of precious lives. In a statement, he termed it a "heinous act of terrorism which is a reminder for us as nation that few remnants of this menace are still left to be eliminated totally."