A Mumbai court today extended the Enforcement Directorate custody of HDIL promoters Rakesh Wadhawan and his son Sarang Wadhawan till Thursday. The father-son duo was arrested in connection with Rs 4,355 crore Punjab and Maharashtra Cooperative, PMC, Bank scam. <br />'' <br />'' The ED produced Rakesh Wadhawan and his son before special Prevention of Money Laundering Act court judge P Rajvaidya, after their remand ended today. It sought their further custody to probe them further in connection with the scam.<br />