A bomb attack on a passenger train near Quetta (the capital of Balochistan province in southwestern Pakistan, near the Afghan border) has killed at least 30 people and wounded several others after an explosion derailed the locomotive and three carriages, two of which overturned completely. The Balochistan Liberation Army (BLA), a separatist group seeking independence for Balochistan — Pakistan's largest but poorest province — has claimed responsibility for the morning blast. The attack is the latest in a long-running insurgency in which the BLA accuses Islamabad of extracting the region's vast natural resources without reinvesting the proceeds locally; the group carried out a deadly large-scale train hostage crisis last year as well. Prime Minister Shehbaz Sharif condemned the assault and vowed to eradicate terrorism, while authorities declared a state of emergency and mobilised all nearby hospitals to treat the casualties.