Rescuers in Bangladesh were struggling on Tuesday to pull passengers from mangled wreckage after a head-on collision of two trains killed at least 16 people and injured more than 60.

A train heading for the southern port city of Chittagong and one bound for Dhaka collided at around 3 a.m. (2100 GMT) in Brahmanbaria, about 100 km east of the capital, crumpling three compartments of the southbound train.
It was not immediately clear how the two trains came to be on the same track, and the government has ordered an investigation.