The gang was busted and seven members of the group, including its two masterminds, were detained after the CBI conducted a raid at an examination centre in Sarvodaya Bal Vidyalaya near ITO when the SSC examination were on, the agency said.
"Seven members of the gang, including the two masterminds, and five candidates were detained with mobile phones and laptops while the examination was being held," CBI spokesperson said here.
CBI sources said the two masterminds -- Mukesh Maan and Rajnish Maan -- of Narela area had been arrested while other detainees role is being examined and call on their arrests would be taken soon.
They said Manns extracted lakhs of rupees from a single candidate for providing answer keys to the candidates in examination hall using bluetooth microphone which candidates hid and stitched in their clothing.
The gang members allegedly took money from the candidates and provided them with minute bluetooth earphone and mike which they hid in their clothes. The masterminds hired several analysts who used to solve the paper within minutes.
The gang used to park a car outside the centre from where analysts solved the paper which took nearly 15 minutes, teh agency sources said.
The answer keys were provided to the candidates through bluetooth devices in the batch of five questions, the sources said, adding the messages were given like "12344" in one message which indicate correct options to set of five questions.