Four people were killed and five wounded on Wednesday when a bomb attached to a motorcycle detonated in the Sibi town of Balochistan, police said.The blast was the latest in a series that have hit the province. "It was a remote-controlled bomb fixed to a bike in the main bazaar of Sibi. Four people were killed and five injured, three seriously," local police officer Muhammad Hussain said. "Three of the victims were from a pro-government tribe and one was a passer-by," he said. "It appears the bombing was a targeted attack. We are investigating if the victims had any rivalry," he said.
Separately one person was injured in Quetta when a hand grenade exploded at a stall selling adornments for Independence Day on August 14, police said.
An attempt to blow up a gas pipeline in Quetta was foiled. Unknown saboteurs planted explosive material alongside the gas pipeline near Abdullah Town. The explosion caused minor damage to the pipeline.
In another incident, Bharam Khan, a security guard for an intelligence agency, was axed to death on his way to work near Kuli Risaldar.
Another small blast near on the outskirts of Quetta caused no casualties, police said.
Balochistan, which borders Iran and Afghanistan, has been hit by years of unrest blamed on Baloch tribes seeking more political rights and share of profits from the region's natural resources.
Hundreds of people have died in violence in the province since the insurgency flared in late 2004. The province has also been hit by violence blamed on hardline Taliban, who are not linked to the separatists.