The CBI has registered a case of amassing disproportionate assets against Murari Lal Tayal, who was principal secretary to former Haryana chief minister Bhupinder Singh Hooda. Tayal, already under the CBI scanner in connection with a case of land allotment irregularities, has been booked along with his family members. <br/><br/>The FIR, registered last night, alleges that Tayal amassed 10 crore rupees of assets during 2006-14 which he could not explain from his known sources of income. The agency has filed the FIR under provisions of Prevention of Corruption Act.