RJD president and fodder scam convict Lalu Prasad surrendered before a CBI court in Ranchi on Thursday, after the expiry of his provisional bail. Prasad, who reached Ranchi from Patna on Wednesday, was directed by the Jharkhand High Court to surrender before the CBI court by August 30.After being sent to jail in December last year following conviction in fodder scam cases, Prasad spent a considerable time at the RIMS hospital in Ranchi and at the AIIMS at New Delhi, for treatment of various ailments. He was also treated at a Mumbai hospital for three weeks and was discharged on August 25