She imposed a nationwide Emergency to safeguard her position on the night of 25 June 1975. Immediately after proclamation of emergency, prominent opposition political leaders Jayaprakash Narayan & Satyendra Narayan Sinha were arrested without any prior notice, so were dissenting members of her own party. JP was held in custody at Chandigarh even after he had asked for a month's parole for mobilising relief in areas of Bihar gravely affected by flooding. His health suddenly deteriorated on 24 October, and he was released on 12 November; diagnosis at Jaslok Hospital, Bombay, revealed kidney failure; he would be on dialysis for the rest of his life.