The Pakistan Army says it released more than 300 hostages from a passenger train seized by the militants in Balochistan Province on Tuesday.
A military spokesman said 33 fighters were killed during the operation.
The military spokesman said that twenty -one civil and four military personnel were killed by the Blash Liberation Army (BLA) before the operation began.
The army continues the search in the area to exclude any remaining threats.
The Pakistani authorities – as well as many Western countries, including the United Kingdom and the United States – assigned BLA as a terrorist organization.
BLA is one of the rebel groups that calls for either autonomy or independence in Balochistan, the largest province in Pakistan.
They accuse Islamabad of exploiting the province rich in mineral resources with their neglect as well. In the past, they attacked military camps, railway stations and trains – but this is the first time that they kidnapped a train.
The officials said that at least 100 people from the train were members of the security forces.
