Mumbai, March 4 -- The Central Bureau of Investigation (CBI) on Sunday made six arrests, including two senior officers of the National Highways Authority of India (NHAI), as part of an inter-state probe into an alleged bribery case. The agency also recovered cash of Rs.1.10 crore during its search operations conducted in Maharashtra and Madhya Pradesh (MP) at the accused persons' official and residential premises, including the alleged bribe amount, agency sources said....