“Here’s the press release.”:http://drdo.gov.in/drdo/English/dpi/press_release/Agni_5.pdf
It contains some good detail. Perhaps interestingly, the DRDO didn’t call the missile an ICBM.
The real missile geeks (and I mean that respectfully) can sort this out, but I am curious as to what the below claim says about India’s missile skills:
bq. The redundant Navigation systems, very high accuracy Ring Laser Gyro based Inertial Navigation System (RINS) and the most modern and accurate Micro Navigation System (MINS) *ensured the Missile reach the target point within few meters of accuracy.*