Two express trains collided in southern Pakistan early Monday, killing at least 30 passengers, authorities said, as rescuers and villagers worked to pull injured people and more bodies from the wreckage.

Between 15 to 20 passengers are still trapped in the wreckage of the Millat Express train and authorities were trying to arrange heavy machinery to rescue those people who are crying for help, said Umar Tufail, a police chief in Ghotki district in Sindh province, where the collision occurred before dawn.