On receipt of the news of the explosion, the Home (Police) Minister of West Bengal Buddhadeve Bhattacharya after discussion with Chief Minister Jyoti Basu in Calcutta issued an order enforcing statewide alert against possible subversive activities in the State. People have been asked to report to the police whenever they spot anywhere any unclaimed baggage or suitcase.

Immediately after the incident a posse of the Army's Bomb Detection cell rushed to the station from Binnaguri. From Calcutta too forensic experts were sent to Siliguri. From the site of the explosion, a nine-volt battery, an electro-magnetic wire and 3.1 kg of explosives were recovered. The Army and the police cordoned off the whole station after the explosion. From Calcutta the Inspector General of Police (Railways) Mr. Rajat Majumdar the IG, IB Mr. B.P. Singh, DIG-CID (Operation) Mr. Partha Bhattacharya also left for Siliguri from Calcutta. Ministers Ashoke Bhattacharya and Mr. Jogesh Barman also left for North Bengal form the city. On the day of the occurrence it could not be officially confirmed who were behind the explosion. But intelligence sources said that the militant outfit of Assam, ULFA had owned up the responsibility for explosion at the behest of the Pakistan's Inter Service Intelligence Agency to prevent Indian Army jawans from proceeding to Kargil.

Of the three deceased Army jawans two could be identified the same day. They are Mr. Jim Bahadur Thapa, and Mr. Rim Bahadur Gurung. The third army jawan could not be identified that day. Another victim of the explosion who died is Ms. Ilsha Mondal wife of a railway hawker.

On Wednesday (June 23) the State's Home (Police) Minister, Buddhadev Bhattacharya said in Calcutta that Pakistan's intelligence outfit ISI was behind Tuesday's powerful explosion at the New Jalpaiguri station caused by a remote-controlled device. This was revealed in the preliminary police report.

Bhattacharya said a detailed investigation into the explosion will be made by the State's police jointly with the Army.

Making a statement in the State Assembly Bhattacharya said that on June 20 the police and the Army personnel defused two explosive devices on the railway track between Domohani and Falakata after receiving a message from the local people. The third device however went off on its own. Early on June 21 morning a powerful bomb exploded causing derailment of a few wagons of a goods train between Domohani and Jalpaiguri Stations. From the place of occurrence, two detonators one nine-volt battery, a few pieces of electro-magnetic wire were recovered. The explosive that went off at the New Jalpaiguri Station was hidden inside a briefcase. He said that the state government felt the ISI had a hand in the explosion on the New Jalpaiguri Station platform. Besides, extensive damages were wrought in one bogie of the Sikkim-Mahanda Express. The Darjeeling Mail which arrived late and was waiting at the station had also sustained damages. The platform too had been damaged with a large portion of the corrugated sheds blown off.