Former Rajasthan minister Mahipal Maderna was today questioned in Jodhpur for about six hours by the Central Bureau of Investigation (CBI) over his alleged involvement in the case of a missing nurse Bhanwari Devi. According to CBI sources he has given some important information and is cooperating with the investigation agency.The CBI had summoned Maderna for interrogation over his alleged role in Bhanwari's kidnapping. She had gone missing on September 1st before which she was in possession of a CD. The CBI had also rushed a team to Rajasthan's Ajmer city following reports that Bhanwari Devi had a bank locker there and the CD could be hidden there.