New Delhi, Dec 16 (ANI): Political leaders reacted on Tuesday after a Special court demanded CBI to record Former Prime Minister Manmohan Singh's statement on coal scam. BJP leaders Sambit Patra and Subramanian Swamy said that the coal scam should be investigated properly, even if Former Prime Minister's statement is required in the case. Congress leader Manish Tewari said that the legal procedure should be followed.