Islamabad, Pakistan (CNN) -- Explosions near Pakistan's border with Afghanistan killed 15 people Friday, authorities said.
A car bomb outside the home of a former lawmaker killed 13 and wounded 30 in Quetta, the capital of Balochistan province, said Nazir Kurd, a senior police official there. The lawmaker's son, who was the target of the attack, survived the blast, he said. The slain worked for the son, Shafiq Mangal. His father wasn't home at the time of the attack, Kurd said.
A banned militant group, Baloch Liberation Army, claimed responsibility for the attack to CNN. The group wants autonomy for Balochistan.
Earlier, a bomb blast killed two people and wounded three in northwest Pakistan's tribal region, a senior Pakistani government official said.
The bomb was planted on a road near the village of Dara Bazar in the Bajaur Agency, one of the seven districts that make up Pakistan's tribal region, said Islam Zeb, a senior administrator in the district.
The bomb was remotely detonated, Zeb said.
It was was not immediately clear who was targeted in the blast or who was killed.
CNN's Nasir Habib and Journalist Saboor Khattak contributed to this report.