Ex-principal Sandip Ghosh undergoes CBI polygraph test, Roy’s turn next

The CBI conducted a polygraph test on Sandip Ghosh, former principal of RG Kar Medical College, in connection with the rape-murder of a postgraduate resident doctor. Tests will follow for six others including prime suspect Sanjay Roy. A team from New Delhi conducted the tests after court approval. The CBI aims to verify statements and investigate leads for the case.