The US Missile Defense Agency (MDA) has reportedly terminated an intercept test of the Aegis Ashore missile defence system following a target malfunction.
A MDA spokesman said: "Due to a target malfunction, the test wasn't conducted and an interceptor wasn't launched."
Built by Lockheed Martin, this Aegis Ashore system was intended for deployment at the new site in Romania and is scheduled to start operations this year.
The Aegis Ashore system also supports US phased, adaptive approach (PAA) Phases II, III and IV for missile defences in Europe. Installation of the system in Romania is part of the PAA Phase II.
The land-based component of the ballistic missile defence (BMD) system, Aegis Ashore is designed to defeat short to intermediate-range ballistic missiles.
It is aimed to enhance the present and future Aegis BMD capabilities to adapt to the evolving ballistic missile security environment.
The system uses a similar configuration to the vertical launch system, fire control system, and SPY-1 radar, which are currently operational on globally deployed Aegis cruisers and destroyers.
The SPY-1 radar is reportedly the most common naval-phased array radar in the world, offering the US and allied nations advanced surveillance, anti-air warfare and missile defence capabilities.
In February, the US Navy and MDA successfully tested the Aegis BMD weapon system at Nasa's Wallops Flight Facility, Virginia, US.