Police in India say they have arrested two people in connection with last month's bomb attack aboard a train travelling from India to Pakistan.
The fire engulfed two carriages on the Samjhauta (Friendship) Express
The two were picked up from central city of Indore. Police believe they sold the suitcases used to make the bombs that were set off on the train.
The blasts and blaze on the cross-border train killed 68 people.
It is not clear who was behind the attack on the Friendship Express and no group has admitted carrying it out.
Senior police official RC Mishra said the authorities believe the bombers purchased suitcases in Indore that were stuffed with explosives and petrol.
India has said it would share with Pakistan the results of its inquiry into the 18 February bombing.
Many of the passengers killed in the incident were Pakistanis returning home.
Indians have also given Pakistani authorities the sketch of a man said to be from Pakistan who was allegedly involved in the bombing.
The twice-weekly cross-border Friendship Express - one of only two rail links between India and Pakistan - was restarted in 2004 after a two-year gap as part of the peace process.