"Five minutes into flight, the rocket’s cryogenic or third stage powered by liquid hydrogen and oxygen, was switched on, but two small engines that control the final stage carrying the satellite into space failed to ignite. The rocket then plunged into the Bay of Bengal."

Major setback for Isro as GSLV mission fails - Economy and Politics - livemint.com

This is indeed sad. Good luck with the next launch to all folks @ ISRO. This is really close to me as my dad spent some time in Russia learning about the cryogenic engine and worked with ISRO developing many technologies for the cryogenic module.