A complaint was filed on Sunday night in connection with the killing of Gaibandha-1 MP Manjurul Islam Liton, reports UNB news agency.
Liton’s younger sister Tahmida Bulbul Kakoli filed the complaint against 4 to 5 unidentified people with Sundarganj police station of the district, said officer-in-charge of the police station Atiar Rahman.
Meanwhile, law enforcers arrested 18 people from separate places of the district from Saturday night to Sunday noon in connection with the murder.
Members of Border Guard Bangladesh (BGB) were also deployed in several points of the upazila to ward off any untoward incident.
Besides, upazila Awami League observed a daylong hartal in the upazila protesting the murder.
The shutdown that began at 6am ended at 6:00pm.
Witnesses said a group of pickets set fire to rail tracks near Bamandanga Railway station in the morning.
The agitating leaders and activists of local Awami League blocked several roads in the upazila placing logs in at least 12 places.
Separate processions were brought out by local AL leaders and activists and general people demanding justice for MP Liton.
Talking to reporters, general people and local AL leaders blamed the lack of security for the MP for the killing.
Meanwhile, a three-member delegation of Awami League, led by its central leader Jahangir Kabir Nanak, visited the family members of the slain MP.
Manjurul Islam Liton, MP of Gaibandha-1 constituency, was shot to death by miscreants at his family residence at Bamandanga village in Sundarganj upazila on Saturday.
Liton hit headlines after shooting a minor boy, Sourav, 8, son of Sazu Miah of Gopalcharan village in the upazila, on 2 October last year.