Police today claimed to have arrested three people, including an assistant engineer of Gazipur City Corporation (GCC), in connection with the killing of the city corporation's executive engineer.
The arrestees were identified as assistant engineer Anisur Rahman Selim, microbus driver Habib Mia and alleged hired killer Helal Howladher Shahin.
Of them, Habib and Shahin today confessed before a Dhaka court about their involvement with the murder, said Sheikh Mofizul Islam, inspector of Turag Police Station.
The court placed another arrestee, Selim, on five-day remand for interrogation after police produced him seeking a 10-day remand prayer, he said.
On May 11, a team of Turag Police of Dhaka Metropolitan Police (DMP) recovered a body of from Beribadh and later get identified the body as that of GCC Executive Engineer Delwar Hossain through fingerprints.
The family members also identified the body on May 12 at Shaheed Suhrawardy Medical College morgue. Later, the victim's wife, Khodeza Akther filed a case with Turag Police Station against unidentified people.
Inspector Mofizul, who is also the investigating officer of the case, said it was a premeditated murder. "The arrestees, Habib and Shahin, blamed assistant engineer Selim for masterminding the murder," he said.
Police analysed CCTV footage of the victim's residence and nearby areas and discovered two people waiting in front of the residence in a microbus.
The footage showed that they stopped a rickshaw-puller and used his mobile phone to called someone. Moments afterwards, someone called back on the phone and the persons waiting with the microbus went in front of Delwar's residence and then abducted him, said police.
Police first traced the rickshaw-puller, Rafiqul Islam, on May 17. Later, police conducted a drive and arrested the three following Rafiqul's information and some technical support last night from different areas of the capital, said the inspector.
Rafiqul, who also recorded his statement in the court under section 164 as a witness, said they gave him Tk 100 to use his phone, said Mofizul.
The arrestees later took Delwar near Beribadh and Shahin strangled him upon instruction from Selim, police quoted the arrestees as saying.
The arrestees then dumped Delwar's body and threw away his mobile phone into Diabari Lake, which police later recovered with help from fire service and civil defence.
"We will interrogate assistant engineer Selim about the motives behind the murder and try to find out whether any more were involved behind the killing," added inspector Mofizul.