The police Friday arrested two militants, suspected of killing three Chinese engineers in February near Southern Karachi port city, said police. The militants, Wali Mohammad and Mohammad Hussian, were arrested in Karachi while they were traveling to Southwestern Baluchistan province, said Chaudhry Amir, a deputy superintendent of police. He told newsmen that police also recovered a laptop, hand grenade and a pistol from them. He alleged that the two are members of outlawed Baluch Liberation Army (BLA), a shadowy group involved in insurgency to seek greater provincial autonomy.The government listed BLA as a terrorist organization earlier this month. Three Chinese engineers and their Pakistani driver were killed in a drive-by shooting in industrial area of Hub in Baluchistan province.