Students of different colleges and universities of the city formed a human chain on a road in front of the Central Shaheed Minar in Sylhet yesterday, demanding arrest of the killers of Shamim Ahmed Chhoton. On October 30, a student of MC College, Sylhet  Shamim Ahmed Chhoton was allegedly killed in a clash in Companiganj Upazila of the district. Since the murder police yet to arrest anyone yesterday connection. Speakers at the human chain programme demanded immidiate arrest of the killers of Chhoton. They also gave ultimatum to the police administration to arrest the killer of Chhoton within 24 hours. They threatened to go for a tougher movement if their demands are not met. Presided over by Rakibul Islam Ruman, the human chain programme was attended by the hundreds of students of different educational institutions, local elites  of the city.