Vaiko had yesterday sought criminal prosecution of the Sri Lankan envoy under sedition charges for allegedly trying to instigate north Indians against the people of Tamil Nadu. “The Tamil Nadu Police must immediately register a suo motu FIR against Vaiko, arrest him for custodial interrogation and launch his prosecution. Otherwise, the Crime Branch in the Home Ministry should register the FIR,” Swamy said in a statement. Kariyawasam has blatantly violated “diplomatic immunity” by reportedly sending email to media houses recently in which he claimed Sinhalese have their origin in Odisha and West Bengal, Vaiko had said in a letter to Prime Minister Manmohan Singh. India’s Janata Party president Subramanian Swamy today termed MDMK chief Vaiko’s remarks against Sri Lankan High Commissioner Prasad Kariyawasam as “scurrilous” and demanded his arrest, the Press Trust of India reported.“The scurrilous remarks of MDMK leader Vaiko against the High Commissioner of Sri Lanka Prasad Kariyawasam is an offence under Sections 124A and 125 of the Indian Penal Code.