On 12 January 1967, Radha and a producer K.N. Vasu of Muthukumaran Pictures visited the actor and politician M. G. Ramachandran at his home to talk about a future project. During the conversation, Radha suddenly got up from his chair and shot twice at Ramachandran's left ear. Both bullets got lodged in Ramachandran's neck. Radha then turned the gun on himself and tried to shoot himself, but the bullet just scratched his right temple. Radha and Ramachandran were admitted to the Government General Hospital, Chennai, where they survived after proper treatment. The only eye witness for the shooting event was producer Vasu. As majority of the evidences were against Radha, he was sentenced to a seven-year term. At the High Court hearing, considering his age, the sentence was reduced to three and a half years.