A kingpin of a racket and two others were arrested for their alleged involvement in helping examinees cheat in job recruitment exams and university admission tests.

A team of detectives arrested them in Ramna and Shyamoli areas on Tuesday, Mashiur Rahman, deputy commissioner of DB (north), told The Daily Star.

The arrestees are Pulakesh Das Bachchu, 32, kingpin of the racket and also a former thana election officer; Monirul Islam, 23, and Firoz Ahmed, 26.

Police seized eight electronic devices and 11 Bluetooth earpieces from their possessions.

Some of the electronic devices look like a debit or credit card but works like a cell phone. Those also had tiny wireless bullet-like earphones used for a two-way communication. One just needs to put the tiny earphone in the ear and the device in the pocket or wallet.

After a few minutes into the test, the examinees were given the answers through the device, said police.

In a primary interrogation, Pulakesh said he used to import the devices from China through some businessmen.

Gradually, he made a syndicate along with some bank officials.

Other members of the gang contacted the examinees. Some of them used to distribute those devices among the examinees while some used to solve the questions.

“Some dishonest college teachers in Dhaka are also helping the racket to leak questions,” alleged the deputy commissioner.

Primarily, they took Tk 30,000 to Tk 1 lakh for the preliminarily test. Those who passed had to pay more for the next phase.

Earlier on April 6, detectives arrested 10 persons including three bank officials of this gang. After the incident, the DB filed a case with Ramna Police Station accusing 13 people under the public exams law and ICT act.

“Pulakesh is the kingpin of this racket aided by assistant director of Bangladesh Bank Abu Zafar Mazumdar alias Rubel,” according to the case statement.

Both of them were students of Jagannath University and had been involved in the racket, having around 15 to 20 members, since their university days, according to DB sources.

Abu Zafar joined Bangladesh Bank in 2015 while Pulakesh started working at the EC in 2014.

Another bank official Curzon, a close aide to Pulakesh, is on the run. Police said they were trying to arrest the other members of the racket.

Meanwhile, law enforcers claimed to have detained four youths from Birampur area under Sreemangal upazila of Moulvibazar on Tuesday night over their involvement in question paper leak, reports our Moulvibazar correspondent.

RAB also seized five mobile phones, nine SIM cards and four memory cards from their possessions.

They are Shawkat Hossain, 19, and Sourav Hossain, 21, Abdul Kadir, 23, and Hridoy Mia, 22, said RAB-9 Assistant Superintendent of Police (Media) Nahid Hassan.

He said a special team, led by Biman Chandra Karmakar, additional superintendent of RAB-9, arrested them around 11:00pm on Tuesday.

They collected a huge amount of money through supplying answers to students by using several Facebook IDs and other social media platforms.

The arrestees were handed over to Sreemangal Police Station.