The accident occurred at an unmanned railway crossing close to the city of Sheikhupura in Pakistan's largest province, Punjab.
The workers fell asleep on the tracks of the train. They were walking back to their home village after the steel company they were working for, laid them off due to the coronavirus pandemic.
Vietnam's 1902-built railway attracts crowds of tourists that want to snap selfies with passing trains or lounge at trackside cafes. But the government has given a deadline for all cafes to close down to secure public safety.
Pyongyang and Seoul agreed in October to work on reconnecting railways and roads as part of a thaw in relations that the US fears will undermine efforts to press North Korea to give up its nuclear weapons.
South Korean officials on the way to the North to attend a ceremony for reconnecting roads and railways between both sides.
The new 700 kilometre electrified train line runs parallel to the now abandoned Ethiopia-Djibouti railway. It is the first part of a vast network of 5,000 kilometres of rail which Ethiopia hopes to build by 2020.
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