More than 400 people were on the Jaffar Express on Tuesday when militants fired on the train and blew up the track in the Balochistan region, Pakistani security officials said.

The separatist Baloch Liberation Army claimed responsibility for attacking the train carrying 440 passengers in a tunnel in a remote part of Balochistan. Spokesman Jeeyand Baloch had said the group was ready to free passengers if authorities agree to release jailed militants.