At least four people have been killed and six wounded in an explosion claimed by the Islamic State (IS) extremist group in Pakistan's southwestern province of Balochistan shortly after a rally of Pakistan Tehrik-e Insaf (PTI), the party of imprisoned former Prime Minister Imran Khan, a local police official said. The blast occurred in the city of Sawai on January 30 and was apparently caused by a motorcycle bomb, deputy police chief Inayat Bangalzai told RFE/RL's Radio Mashaal. It was not immediately clear whether the blast was meant to target participants in the rally. Pakistan holds elections on February 8. To read the original story by RFE/RL's Radio Mashaal, click here.