Ludhiana/Patiala, Feb. 11 -- The Punjab police on Monday booked two close aides of minister of state for railways Ravneet Bittu. Bant Singh Doburji, former president of Municipal Council, Doraha, was booked in Ludhiana in fraud case on Sunday evening, while another aide, Rajesh Attri was arrested , for allegedly making casteist remarks over a 'mistaken' WhatsApp call in Patiala on Monday. This comes a day after Bittu's another close associate, businessman Rajiv Raja, was arrested on extortion charges. Raja was sent to two-day police custody. Doburji, who is still in Congress was booked late Sunday evening in a 10-month-old case of cheating and fraud in which his son Daljit Singh Jhajja is among the 14 accused who are already facing trial....