Nawabshah, Pakistan - Investigators scoured the wreckage on Monday of a weekend train derailment that killed at least 34 people, the latest deadly crash to hit Pakistan's antiquated railway network.

More than 1,000 passengers were aboard the Hazara Express when it came off the tracks in a flat, rural part of Sindh province near Nawabshah, around 250 kilometers (155 miles) by rail from the southern port city of Ka