I agree with G Subash that the issue may be of espionage and sabotage. The NSC spying case and other penetrations of Indian institutions show that the country's most secret and valuable programs are exposed. Also, since the commercial launch market is getting increasingly competitive, the major launch pioneers would not be very pleased with India's success in launching a 2 tonne satellite. This said, it is equally possible that some among DRDO may be responsible, which would be sad for an institution with such an otherwise high reputation and the labours of all the scientists concerned. This is mere speculation, but I hope the government will investigate and tighten security.
