The investigation is underway at Nimtita railway station in West Bengal's Murshidabad.
WB Labour Minister Jakir Hossain got injured after unidentified people hurled a bomb at him on February 17 at the railway station.
West Bengal Crime Investigation Department (CID) has taken over the probe of the case.
Speaking to ANI, the Urban Development and Municipal Affairs Minister of West Bengal, Firhad Hakim said, "Around 26 of our people, including Jakir Hossain, were injured and 14 of them are in serious condition.
Police investigation is on and Chief Minister Mamata Banerjee said that CID, STF and CIF have joined in.
I hope Railway will help them." "On behalf of the party, we want that culprits be arrested and brought to court," he added.
