The rocket blasted-off at around 4 pm from the second launch pad at the Satish Dhawan Space Centre at the end of the 29-hour countdown but was hit by a snag
in the first stage itself, ISRO sources said.
"The incident occurred in the first stage itself", the sources said, adding, details would be disclosed later.
This is the second failure this year for ISRO after the previous GSLV mission with the country′s maiden cryogenic engine hit a snag and the rocket plunged
into the Bay of Bengal on April 15 this year.