A damaged train carriage is seen at the site of the deadly train derailment at a tunnel, north of Hualien, Taiwan April 4, 2021. Taiwanese rescuers were trying on Monday to retrieve the last body of a passenger from wreckage of a deadly train crash last week. REUTERS/Ann Wang

A damaged train carriage is seen at the site of the deadly train derailment at a tunnel, north of Hualien, Taiwan April 4, 2021. Fifty people have been confirmed dead after a packed express train carrying almost 500 passengers and crew slammed into a truck near the eastern city of Hualien on Friday, causing it to derail and the front end to crumple. It was the island's worst rail accident in seven decades. REUTERS/Ann Wang

A damaged train carriage is seen at the site of the deadly train derailment at a tunnel, north of Hualien, Taiwan April 4, 2021. The truck had slid down a sloping road from a building site onto the tracks just outside a tunnel. Officials suspect the truck's brakes were not properly applied and are investigating the manager of the site. REUTERS/Ann Wang

A damaged train carriage is seen at the site of the deadly train derailment at a tunnel, north of Hualien, Taiwan April 4, 2021. Taiwan's government has promised compensation and said it would do everything it could to help survivors and their relatives, including coordinating public donations. REUTERS/Ann Wang

A damaged train carriage is seen at the site of the deadly train derailment at a tunnel, north of Hualien, Taiwan April 4, 2021. REUTERS/Ann Wang

Staff in personal protective equipment work inside the tunnel where the deadly train derailment occurred, north of Hualien, Taiwan April 4, 2021. REUTERS/Ann Wang