Nearly 350 hostages were rescued at the end of a deadly standoff between Pakistan’s military and armed militants who hijacked a train in the southwestern Pakistani province of Balochistan, a security source told CNN Wednesday.

Home to about 15 million of Pakistan’s estimated 240 million people, according to the 2023 census, Balochistan remains the country’s poorest region despite being rich in natural resources such as coal, gold, copper, and gas. These resources generate substantial revenue for the federal government.