The dead is Nazrul Islam alias Nazu, 42, son of Harun Mandol of Patchbaria in Mirpur upazila in Kushtia, police said. According to police, Nazrul was a top cadre of an 'outlawed party.' But they did not mention the name of the party.

Police said, a police team of Hijolgari camp in Chuadanga raided a house at Kashipur in Jibonnagar upazila and arrested him at about 1.30am. Earlier, they were informed about Nazrul's presence in the area 'to carry out criminal activities'. Police recovered 20 bullets from his possession before taking him to Hijolgari police camp.

Police said Nazrul fell sick at the police camp at around 5.30am during interrogation. He was immediately rushed to Chuadanga Sadar Hospital where doctors declared him dead.