A submarine has picked up signals from the black boxes of the Yemenia Airways plane that crashed near the Comoros Islands last week, French investigators say.

The investigating agency BEA said the signals were detected Sunday morning during an underwater search.

The Airbus A310 went down Tuesday in the Indian Ocean as it was approaching the Cormoros coast, killing 152 people.

A 12-year-old girl from Paris is the only survivor of the crash. Bahia Bakari suffered only a broken collarbone and some cuts and bruises. She had clung to the aircraft's floating debris for more than 13 hours before rescuers found her.

On June 29, passengers on the ill-fated flight left Paris on an Airbus A330 and stopped over in Marseilles. They then boarded an older A310 Airbus jet in Sana'a, Yemen's capital, and continued on to Djibouti.

The aircraft went down after a second attempt to land in the Comoros capital of Moroni.

BEA's one-line statement gave no indication of when the flight data recorder and the cockpit voice recorder might be recovered.

With files from The Associated Press