The country's most sophisticated medium range surface-to-surface missile Prithvi was on Wednesday successfully test fired from the Integrated Test Range (ITR) at Chandipur-on-sea, about 15km from Balasore in Orissa, defence sources said.

With a one tonne payload, Prithvi has a minimum range of 40km.

With the latest on-board computer and an advance inertia navigation system, the missile can use both solid and liquid propellant and takes just 300 seconds to reach a target at a distance of 150km.

The Defence Research and Development Organisation (DRDO) has so far conducted 16 trials of the army version of the missile since its first trial on February 22, 1988 at Sriharikota in Andhra Pradesh.