His aimless movement grew suspicion in Dulal as he was getting ready for the day's work in his shop in a market of Sonara in Domra upazila.
Dulal, a butcher by profession, saw Obaidul, the prime suspect in the murder of Willes Little Flower School student Suraiya Akhter Risha, wandering around the village market early in the morning of Wednesday.
It was around 7:45am. The behaviour of the young man seemed odd to Dulal. He called him and took him to a tea stall nearby.
“While having tea together, I asked him who he was. He did not give a straight answer, which made me even more suspicious. I could recognise him and I informed Domra police station. A team of police and RAB came and took him away.”
Dulal, 45, is a native of North Harinchara village in Domra.
Sources said just the night before, police had raided Sonara and the nearby areas on information, looking for Obaidul. During the raid, they also distributed Obaidul's photos among the locals and business owners requesting them to inform police if they saw Obaidul.
Some locals in Sonara said they spotted Obaidul in the market on Tuesday night.
Nilphamari Superintendent of Police Zakir Hossain Khan said by helping police in arresting Obaidul, Dulal proved that people are now more conscious about upholding the rule of law.
“If everyone follows Dulal's footsteps and help law enforcement agencies, criminals will never be able to get away.”
Obaidul allegedly stabbed Risha, 14, when she was returning home from school after an exam on August 24. Severely wounded, Risha struggled for her life for four days before succumbing to her injuries on August 28 at Dhaka Medical College Hospital. Her mother Tania Hossain filed a murder case in this regard with Ramna police station.