Majid Abro, the advisor to the Balochistan Chief Minister, was among four persons injured when a remote-controlled bomb went off on Airport Road in the provincial capital Quetta.
Abro is a member of the provincial assembly and a senior leader of the PML-N.
Deputy Inspector General of Police Muhammad Jaffar said Abro and his bodyguard were injured but out of danger. "Abro was going to the airport when the bomb was triggered," he said.
Majid Abro, the injure politician, is a senior leader of the ruling PML-N
Unidentified persons planted the improvised explosive device by the side of the road and detonated it by remote control when Mr Abro's vehicle was passing by. The bomb disposal squad said the IED contained an estimated four kilograms of explosives.
In the second attack, two persons were killed and nine others injured by a blast in Bakhtiarabad area of Sibi town.
The bomb was attached to a motorcycle and detonated by remote control, police said.
Balochistan province has been wracked by violence by separatist militants and sectarian groups, and security personnel and government officials are frequently attacked with roadside bombs.