At least four persons were killed and 15 others injured in a blast near Science College on Quetta's Jinnah Road on Thursday night, officials said.

Iran PressAsia: Following an initial probe into the incident, police said that 2.5 kilograms of explosives were planted on a pole near the site of the blast.

Balochistan Health Department media coordinator Wasim Baig confirmed the death toll in a statement issued soon after the incident.

Adviser to the Balochistan Chief Minister on Home and Tribal Affairs Mir Ziaullah Langove said the explosion was triggered by a remote-controlled device.

Langove visited the site of the blast and expressed sorrow over the loss of lives.

Speaking to the media, he said, "The Pakistani nation has been targeted in the blast," but those who wanted to disrupt peace would not succeed in their nefarious designs.

He further stated that elements spreading terror could not deflate the nation's morale.