Seyne-les-Alpes - Dozens of specialised police and rescue workers kicked off a fourth day of recovery operations on Friday at the scene of the crashed Germanwings jet, hunting for its second black box.
Officials are also combing the wreckage for body parts and DNA samples that would enable them to identify the 150 people that died in the crash, apparently deliberately initiated by co-pilot Andreas Lubitz.
"We're first collecting biological elements, then debris," said a police spokesperson.