Agni-IV surface-to-surface ballistic missile capable of carrying nuclear warhead was test fired from Abdul Kalam Island (Wheeler Island)  on the Odisha coast.
The Agni-IV can cover a distance of 4,000 km. 

Agni-IV had been tested twice earlier for ranges between 3,000 and 3,500 km instead of its full range of more than 4,000 km. The DRDO conceived, designed and developed the Agni-IV.

Agni-V test
The latest victory, coming in the wake of the spectacular success of the Agni-V mission on December 26, 2016, confirmed India’s nuclear deterrence capability for, both the missiles can cover the entire area on the other side of the border. Agni-V can carry a nuclear warhead weighing 1.5 tonnes over a distance of 5,000 km and plus. Agni-V is yet to be inducted in Army. All earlier versions have been inducted.

Status of Agni-IV
Agni-IV has already been deployed by the Army. It is 20 metres long and weighs 17 tonnes. Solid propellants power its two stages. It had been flight-tested five times earlier — in 2011, 2012, twice in 2014 and in 2015. All the five missions were successful. This is the sixth success in a row.

What is a ballistic missile?
Ballistic missile is a missile with a high, arching trajectory, which is initially powered and guided but falls under gravity on to its target. It is different from a cruise missile which moves under its own fuel and near the surface of earth.