Cazeneuve confirmed that the black box that was found on Tuesday was the cockpit voice recorder, saying that it had been damaged but could still be used to find information.

The A320 jet operated by Lufthansa's & Germanwings budget airline was obliterated when it went down in a rugged area of ravines on Tuesday while flying over France en route to  Duesseldorf from Barcelona.

Read more: Germanwings Airbus crashes in French Alps, 150 feared dead      

No distress call was received from the aircraft, but France said one of the two "black box" flight recorders had been recovered from the site 2,000 metres (6,000 feet) above sea level.
A person familiar with the recovery effort told Reuters that this was the cockpit voice recorder. Investigators will also need the other black box which records flight data, information that is essential for probing air accidents.

Civil aviation investigators from France's Bureau d'Enquetes et d'Analyses (BEA) are expected to hold a news conference on Wednesday afternoon.
In Washington, the White House said the crash did not appear to have been caused by a terrorist attack. Lufthansa said it was working on the assumption that the tragedy had been an accident, adding that any other theory would be speculation.
French President Francois Hollande will visit the area about 100 km (65 miles) north of the Riviera city of Nice on Wednesday along with German Chancellor Angela Merkel and Spanish Prime Minister Mariano Rajoy.
Germanwings believed 67 Germans had been on the flight and Spain's deputy prime minister said 45 passengers had Spanish names. One Belgian was also aboard. Australian Foreign Minister Julie Bishop confirmed two Australian citizens had died, a mother and her adult son from the state of Victoria.

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