Giving a strong jolt to the Rashtriya Janata Dal (RJD) ahead of Bihar Assembly elections, senior leader Raghuvansh Prasad Singh on Thursday quit the party. Currently, he is admitted at the All India Institute of Medical Sciences (AIIMS) in New Delhi following some health issues. Singh has sent a letter to RJD chief Lalu Prasad announcing his resignation from the party. Addressing Lalu, he wrote: "I kept standing behind you for 32 years after the demise of Karpuri Thakur, but not any longer." Singh has sent this letter to journalists here. Issuing an apology to the people he wrote, "Party, leaders, workers and people gave me lots of love. Regrets." The RJD leader has been keeping mum over Singh's resignation, but the Bharatiya Janata Party (BJP) and Janata Dal-United are terming his decision as to the "right" one. On the other hand, RJD spokesman MrityunjayTiwari said: "I got to know about his resignation from the media. I have not received any official information." "I'll only give any statement after official information is received," he said. (IANS)