The arrested have been identified as Sukhbeer Yadav, an MBBS 2nd year student, Vikas Kaushik (26) a final year Ayurvedic student and Pawan Kumar (22) a 2nd year BSc student, Chhaya Sharma, Deputy Commissioner of Police (South), said.
The arrests came following investigations into a complaint filed by the Veterinary Council of India after it found out that at least 57 candidates, who cleared the All India Pre-Veterinary Test in May last year, were suspected to have used the services of others to write the entrance exam for them.
The incident of impersonation came to light during counselling sessions last August during which the Council employed the services of a forensic expert to ensure that no impersonation was taken place during the entrance tests.
The Council had first approached the CBI in August which advised it to approach local police for getting cases registered against suspected candidates, who appeared for the test on May 14 last year.
The entrance test was conducted for admission of students under 15 per cent all-India quota in different veterinary colleges in the country.
The counselling session for the successful -- merit and waitlisted -- candidates was held on July 21-22, August 8th to 11 and August 26.