THE CBI which investigated the espionage scandal in the Indian Space Research Organisation (ISRO) did not probe to the logical end the movements of Kerala inspector general of police Ramon Srivastava despite a clear lead from a senior Bangalore police official. The CBI questioned A.R. Infant, an IPS officer, soon after it took over the case from the Kerala Police and the Intelligence Bureau (IB) in December '94. He confirmed Srivastava had visited Bangalore, where ISRO is headquartered, on September 11, 1994.