At least six people, including four police personnel were killed and 17 others injured on Tuesday in Quetta, the Pakistani police said.
According to Geo news, the attacker blew himself up close to a police truck near GPO Chowk on Zarghoon Road.
Senior police officer Abdul Razzaq Cheema confirmed the deaths of the four police personnel who belonged to the Balochistan Constabulary force.
Officials said that at least seven other policemen were also injured in the attack.
Pakistani bomb disposal team, who examined the location to ascertain the nature of the blast, said the bomber, who was between 15 and 20 years of age, detonated between 8 and 10 kilograms of explosive material.