In a written reply in Rajya Sabha, he said, "Scientists have identified that Inertial Navigation System has malfunctioned and corrective design/modification are being implemented."
On whether the missile achieved only partial success, Antony said, "Yes. Except for covering the full range by flying in all way points, all the objectives set for the cruise missile functionality have been met fully."
Maintaining that the missile had a perfect launch with the navigation systems correctly touching the "first way point", he said, "Deviation was observed while going to second way point. When the deviation extended the safety limit, mission abort command was issued from the ground and the destruction mechanism inside the missile was activated."
"The proposal is at a very initial stage. So far, only proposal for requirement for land has been initiated with the Government of Andhra Pradesh.