The two government employees on remand yesterday disclosed names of some more BG Press staff with links to the question leak in Rangpur, said a police official.
On the second day of his remand, BG Press compositor ATM Mostafa said Shahidul, another compositor, with the help of some other BG Press staff had leaked questions of the now cancelled examination for recruitment of assistant teachers at public high schools.
Mostafa also said he and Hamidul Islam, a binder at the Government Printing Press, had carried the question papers to Rangpur.
Like him, Hamidul is on a three-day remand. The two were suspended on Friday.
Saleh Mohammad Tanvir, superintendent of Rangpur police, briefed reporters about the latest developments in the investigation at his office yesterday.
He said Tejgaon police in Dhaka raided Shahidul's house on Friday night, but could not arrest him.
Asked about the other BG Press employees named by Mostafa and Hamidul, the SP said, "Their names cannot be disclosed at this stage of investigation."
Meanwhile, police in the capital have arrested a binder of BG Press.
The arrestee, Laboni Begum, 35, is wife of Mostafa who is detained in Rangpur.
She would be shown arrested in the question leak case in Rangpur.
Tejgaon police said they, aided by a Special Branch team, raided Laboni's house at around 11:00pm on Friday. They seized 19 kinds of papers used in printing and admit cards of some candidates for assistant teacher posts.
Rangpur police on Thursday arrested 167 people including Mostafa and Hamidul at a guesthouse in Gangachara upazila on charges of leaking the multiple-choice questions that were to be used in the exam for assistant teacher recruitment.
The incident prompted the authorities to cancel the exam, which was scheduled to be held on Friday.
SP Saleh said the arrestees on remand have admitted they have a countrywide network through which they contact candidates for appointment in government departments.
They have been involved in leaking questions for the last seven years.
About the Rangpur scam, they said Atiqul Islam and Habib had booked the guesthouse, saying Biotech Pharmaceutical would hold a conference there.
The SP said they would seek to have more arrestees on remand to cross-check the information obtained in last two days.
Police sources said the same syndicate had supplied questions to 55 candidates for a sub-inspector's post a few months back.
On that occasion, the candidates were taken on a bus just a day before the written test.
Once the bus left Dhaka for Panchagarh at noon, they were given question papers and asked to memorise the answers before the bus returned to Dhaka.
The candidates left the bus for examination halls in the capital about an hour before the test began.
Masud Rana, investigation officer in the question leak case, told The Daily Star that leakers these days adopt strange techniques to make sure the questions do not reach anyone other than the candidates they have agreement with.