Acting on a tip off, one Manoj, Harish a Delhi Police constable and Narendra Dahiya were arrested from Shahbad dairy area of outer Delhi, police said.
The trio was arrested after police got an information that they had decided to take the question paper at a school in Rohini.
Dahiya (24), who is a physical training teacher, helped Manoj enter the building and was given access to question papers whose snapshots were taken using a mobile phone, they said.
After their arrest, the trio claimed that principal of a government school in Mangolpuri Krishan Kumar(57) had offered to solve the question papers, they said adding, the principal was also arrested.
