GHOTKI, PAKISTAN, JUNE 8

The death toll from a horrific collision of two trains in southern Pakistan rose to 65 on Tuesday after rescuers pulled 15 more bodies from crumpled cars a day after the crash, government officials said.

The collision took place on a dilapidated railway track in Ghotki, a district in the southern Sindh province, when an express train barreled into another that had derailed minutes earlier before dawn on Monday.

Most of the passengers - there were about 1,100 on both trains - were asleep when the Millat Express, traveling between the southern port city of Karachi to Sargodha in eastern Punjab province, derailed and many of its cars overturned. As passengers scrambled to get out, another passenger train, the Sir Syed Express, crashed into the derailed coaches.

Rescue work continued throughout the day Monday, overnight and into Tuesday. Bodies of passengers killed in the crash were taken to their hometowns for burial.

Shafiq Ahmed Mahisar, commissioner in Sukkar district, said all the bodies had been retrieved after the overnight efforts. Besides the 65 passengers who died in the incident, more than 100 passengers were injured, he said.

Army engineers and soldiers dispatched from a nearby military base assisted in the rescue and heavy machinery arrived in Ghotki hours later, to cut open some train cars. Engineers restored rail service after repairing the track where the accident happened, a statement released by the railway said.

It was unclear exactly what caused the derailment. Aijaz Ahmed, the driver of Sir Syed Express, said Monday he braked when he saw the disabled train but did not have time to avoid the collision.

The more critically injured were transported to hospitals with better facilities in Sindh and also Punjab province, while those more stable were being treated in Ghotki hospital, said Usman Abdullah, who also confirmed the 65 fatalities.

Ata Mohammad, a passenger, said he was asleep on the Millat Express when it derailed. He woke up to a big jolt and saw other passengers trying to climb out from overturned and derailed coaches. Then the other train hit.

"I feel as if I am still hearing cries," Mohammad wept, who lost family members in the crash.

Sher Muhammad, a 45-year-old farmer was working on his land when he saw a train derail on the tracks some distance away. He rushed to the scene but before he could reach it, the second train crashed into the first.

"I don't know whether I will be able to forget that tragic scene," Muhammad said, recounting how he saw women, children and men crying for help.

Villagers who reached the scene first started helping the victims, pulling the injured and the dead from the wreckage until ambulances started coming.

According to Azam Swati, the minister for railways, experts were still trying to determine the cause of the accident. Swati told The Associated Press that all aspects would be examined, including the possibility of sabotage.

By noon Tuesday, the military said the rescue operation was completed.

Train accidents are common in Pakistan, where successive governments have paid little attention to improving the poorly maintained signal system and aging tracks.

In 1990, a packed passenger plowed into a standing freight train in southern Pakistan, killing 210 people in the worst rail disaster in the nation's history.