A fire burns a train carriage after a gas canister passengers were using to cook breakfast exploded, near the town of Rahim Yar Khan in the south of Punjab province, Pakistan October 31, 2019. A fire swept through a Pakistani train on Thursday (October 31) killing at least 46 people, police said, after a gas canister passengers were using to cook breakfast exploded. REUTERS/Asghar Bhawalpuri/via REUTERS TV

A fire burns a train carriage after a gas canister passengers were using to cook breakfast exploded, near the town of Rahim Yar Khan in the south of Punjab province, Pakistan October 31, 2019, in this still image take from video. The fire destroyed three of the train's carriages near the town of Rahim Yar Khan, in the south of the Punjab province. REUTERS/Asghar Bhawalpuri/via REUTERS TV

People watch fire burning a train after a gas canister passengers were using to cook breakfast exploded, near the town of Rahim Yar Khan in the south of Punjab province, Pakistan October 31, 2019, in this still image take from video. Pakistan's colonial-era railway network has fallen into disrepair in recent decades due to chronic under-investment and poor maintenance. REUTERS/Asghar Bhawalpuri/via REUTERS TV

A fire burns a train carriage after a gas canister passengers were using to cook breakfast exploded, near the town of Rahim Yar Khan in the south of Punjab province, Pakistan October 31, 2019, in this still image take from video. REUTERS/Asghar Bhawalpuri/via REUTERS TV

People and rescue workers gather near the site after a fire broke out in a passenger train and destroyed three carriages near the town of Rahim Yar Khan, Pakistan October 31, 2019. REUTERS/Stringer

People gather at the place where a fire broke out in a passenger train and destroyed three carriages near the town of Rahim Yar Khan, Pakistan October 31, 2019. REUTERS/Stringer