Additional police superintendent Shahidul Islam said the three-hour long raid started around 11:30am on Saturday at Nur’s Shimrile residence in Siddhirganj Upazila.
Seven men, including City Councillor Nazrul Islam and senior lawyer Chandan Kumar, were abducted from the city’s Adalatparha on Apr 27.
Their decomposed bodies were recovered from Narayanganj’s Shitalakhya River two days later
Enraged supporters of Nazrul set fire to (Nur) Hossain’s office on Thursday.
Nazrul’s wife Selina Islam Beauty had filed a case of abduction against Siddhirganj unit Awami League Vice-President Nur Hossain and General Secretary Haji Md Yasin.
Hossain refuted the allegations but he and Yasin have not appeared in public since the incident.
Nazrul, accused in at least 15 cases, was given death penalty for murdering a lawyer but was later acquitted by the High Court.
During Saturday’s raid, police confiscated a microbus from Hossain’s house.
Narayanganj police superintendent Mohid Uddin said they also detained 12 men for questioning.
He refused to divulge further details.
Those present at the scene said it was unclear who these men were.
Mohid Uddin said a team of CID experts were examining the vehicle seized during the raid.
Meanwhile, police have arrested three persons over the Narayanganj murders. Police said the mobile phone of lawyer Chandan Sarkar has been recovered from Dhaka.
The prime minister asked State Minister for Home Asaduzzaman Khan Kamal to take immediate initiative to arrest those involved in the abduction and murders.
The ruling Awami League has been trading charges with its arch-rival BNP over the incident.
Earlier in the day, an organisation of Narayanganj lawyers organised a rally in the city demanding the killers’ arrest.
They have also called for a daylong strike in the city for Sunday. The BNP has decided to support the lawyers’ programme.
Meanwhile, the district association of lawyers held processions and rallies in support of Sunday’s strike to protest the seven murders.
The BNP, NAP, CPB, BaSaD, Ganasanghati Andolon and Twaki Mancha have extended their support to the strike.
Narayanganj City Corporation employees will abstain from work for 48 hours to protest the killings.
But its health and cleanliness divisions are kept out of the purview of the programme, said Ward 18 Councillor Kamrul Hasan Munna.
“22 among 36 councillors took the decision after discussions with the mayor,” he said.