Police in Raiganj, Sirajganj, have arrested the main suspect, Titon, about one and a half months after the killing of HSC examinee Abdur Rahman. Raiganj police detained him during an operation in Gazipur on Wednesday. Rahman was a student of Raiganj Business Management and Technical College.

Police said an argument began on the night of July 14 after Rahman objected to drug use. Titon allegedly became enraged and attacked Rahman and his elder brother, Hasan, with a Burmese knife and a machete. Both brothers were indiscriminately hacked and injured in the attack.

Local residents rescued the injured brothers and admitted them to hospital. Abdur Rahman died while receiving treatment on July 17. Additional Superintendent of Police Saiful Islam Khan of the Raiganj Circle said Titon, identified as the main accused in the killing, had been arrested from Gazipur. Police said the incident is under investigation and necessary legal action is being taken.