Opposition Rashtriya Janata Dal in Bihar on Friday accused CBI officials of "misbehaviour" and using "unparliamentary language" while interrogating Rabri Devi, a former chief minister and the wife of the party's national president Lalu Prasad. A CBI team had early in the morning raided the 10, Circular Road residence of Rabri Devi who has been named as accused in a fresh corruption case lodged by the investigating agency.