A bomb blast killed a man and injured three others on Sunday in Hub, police told AFP. The blast took down an electricity pylon in the industrial town of Hub, some 700 kilometres southwest of Quetta, disrupting power supplies to Hub and the nearby town of Uthal. Meanwhile, two separate grenade attacks elsewhere in Balochistan injured five people, including two police officers. Three people, including the two policemen, were inured in Quetta when motorcyclists lobbed a grenade at them late on Sunday. A customs official and his wife were injured in the second attack, 300 kilometres south of Quetta in the Dera Bugti district. Two rockets were fired at a paramilitary police post in the Bolan area, 70 kilometres east of the provincial capital, but no one was injured.