New Delhi: The Supreme Court on Friday dismissed former RG Kar Medical College and Hospital principal Sandip Ghosh's plea challenging the Central Bureau of Investigation (CBI)'s probe into the financial irregularities, media reports said.

Ghosh was earlier this week arrested by the CBI in connection with the financial irregularities at RG Kar Medical College and Hospital, where a 31-year-old trainee doctor was raped and murdered last month.

The Enforcement Directorate on Friday raided 8 locations across Kolkata, Howrah and Hooghly including the one of Sandip Ghosh in connection with the money laundering case in the hospital.

Speaking to the reporters, Ghosh's wife said, "My husband is not guilty. He has been victimised. Not a single evidence has yet been found against him. I am not sure there will be no evidence."

Besides Ghosh, three others have been arrested by the central probe agency including vendors Biplav Singha and Suman Hazara, who supplied medicine to the hospital, and Afsar Ali, a security guard.

The financial irregularities case against him was enforced following a petition by former Deputy Superintendent of RG Kar Hospital Akhtar Ali.

He had accused Sandip Ghosh of illegal sale of unclaimed corpses, trafficking of biomedical waste, and passing tenders against the commission paid by medicine and medical equipment suppliers.

He also alleged that students were pressured to pay up to Rs. 8 lakh to pass exams.

The Supreme Court as well as the Calcutta High Court has repeatedly questioned why Ghosh, being the principal of the medical college when the brutal crime took place, did not lodge a police complaint.

Ghosh, who faced the ire for alleged mismanagement and financial irregularities at RG Kar Medical College and Hospital, resigned from his post facing protests from the medical students.

Though he had resigned, the Mamata Banerjee government had controversially appointed him to a similar post at Calcutta National Medical College within a few hours.