Imphal, Jan. 7 -- The Bishnupur district police on Tuesday handed over the investigation into Monday's bomb blast at Saiton Nganukon Wards 7 and 8, which injured two civilians, to the National Investigation Agency (NIA), officials said. The first of two improvised explosive device (IED) blasts occurred around 5am on Monday in an unoccupied house belonging to 70-year-old Salam Mani. The house had remained vacant since May 3, 2023. "There was another IED explosion near Saiton Nganukon Ward number 8, under Phougakchao Ikhai Police Station, Bishnupur district, in which two civilians sustained injuries. The case has been forwarded to the NIA for further investigation," an official said. Senior police officers, including the inspector general of police and the superintendent of police, Bishnupur district, visited the blast sites to assess the situation. Security forces have launched combing and search operations in the adjoining areas. Operational efforts are under way to identify and apprehend those responsible for the explosions, officials said. On December 16, another bomb attack, allegedly carried out by Kuki militants, occurred at Torbung, about 4km from Monday's blast site. "I strongly condemn the unprovoked IED attack at Saiton Nganukon in Bishnupur district. Targeting civilian homes, even in areas under security cover, is a cowardly act and a grave threat to public safety. Such violence is meant to spread fear and destabilise peace," former chief minister N Biren Singh said on social media. "There must be zero tolerance for attacks on civilians. The perpetrators must be identified and dealt with firmly," he said. Several organisations, including the Indigenous People Organisation and the All Manipur Students' Union, called for a 24-hour shutdown across the state, starting 12 am on Wednesday, to protest the blast....