One of the black box flight recorders from the Yemeni plane which crashed in the Indian Ocean on Tuesday has been located, a French official has said.

Efforts to retrieve the recorder will begin during the day, the official added, quoted by AFP news agency.
Meanwhile doctors say the only survivor of the crash, teenage girl Baya Bakari, is recovering and in no danger.
The plane, flying from the Yemeni capital Sanaa to the Comoros, came down in bad weather with 153 on board.
There were 66 French nationals among the passengers. Most of the rest were Comorans.
Most of the passengers had flown on a different Yemenia aircraft from Paris or Marseille before boarding flight IY626 in Sanaa.
"The black box's signal was located yesterday [Tuesday] at 1630 local time (1230 GMT) by an aerial patrol, 40 km [25 miles] from Grande Comore," a spokeswoman for Co-operation Minister Alain Joyandet said.
Most aircraft have a flight data recorder and a cockpit voice recorder. It was not clear which of the two from the Yemeni plane had been located.
'Still hope'
A French vessel has been sent to the site to start recovery operations, she added. French rescue teams are already involved in the search for survivors.
She's a very timid girl, I never thought she would escape like that
Father of survivor Baya Bakari
Apart from the 14-year-old girl found alive, no-one from the plane has been confirmed alive, and rescuers say chances of finding more survivors are slim.
AFP news agency quoted hospital sources in the Comoros capital Moroni as saying they were preparing to receive another child survivor, but Mr Joyandet later said no more survivors had been found.
Sources close to the Comoran rescue team say the only confirmed survivor, who has been named as Baya Bakari, was being treated in Moroni and her condition had improved.
The Associated Press news agency quoted her father as saying she had been travelling with her mother to the Comoros from Paris to visit family.
Kassim Bakari said she had been ejected from the plane when it came down and clung to debris for several hours until she was rescued.
"She's a very timid girl, I never thought she would escape like that," he said, describing her as "fragile" and barely able to swim.
He added that he was mourning the loss of his wife whilst overjoyed at his daughter's extraordinary escape.
Doctors at the hospital said she had cuts to her face and a fractured collarbone, but was not in danger.
"She is very calm given the shock she suffered," surgeon Ben Imani told Reuters.
Angry protest

The French transport ministry had earlier said the Airbus 310 plane which crashed had been banned from France because of "irregularities".
But Yemenia responded by criticising "false information and speculation about technical problems" on the plane.
Several Comoran expatriates angry with what they see as the poor state of the company's aircraft tried to stop passengers from checking in for another Yemenia flight leaving Paris Charles de Gaulle airport for Sanaa.
About 60 people failed to check in, reports said, but it was not clear how many did so as a result of the protest.
The crash was the second involving an Airbus aircraft in recent weeks. On 1 June an Air France Airbus 330 travelling from Rio de Janeiro to Paris plunged into the Atlantic, killing all 228 people on board.

HOW THE BLACK BOX WORKS
Flight data recorders, or "black boxes", are in fact orange or red.
Commercial aircraft carry two. One logs performance and condition of aircraft in flight, another records conversations of crew and their contact with Air Traffic controllers during the flight.
The Crash Survivable Memory Unit (CSMU) contains a memory board surrounded by thermal insulation and steel armour that can withstand a crash impact thousands of times the force of gravity and survive in the sea at depths of 20,000ft (6,096m).
The CSMU is insulated to sustain temperatures up to 1,100C for up to an hour or "low" temperature fires of around 260C for 10 hours.
An underwater locator beacon fitted on recorders emits continuous ultrasonic "ping" when they come into contact with water. The signal can reach the surface from depths of 14,000ft.

Italian train crash children die

Two children badly burned when a train exploded as it passed through an Italian town have died of their injuries, taking the death toll to 16.

The three-year-old girl and the two-year-old boy had both suffered burns on 90% of their bodies, officials said.

At least a dozen other people remain in a critical state, according to reports.

The accident happened in the northern town of Viareggio on Monday night, when a train carrying gas tanks jumped the tracks and exploded near houses.

Investigators want to know whether a broken axle may have been responsible.

Berlusconi booed

The blast caused two buildings - described as houses or small blocks of flats - to collapse while others were set on fire.

The accident happened shortly before midnight, when most people would have been at home.


Two children badly burned when a train exploded as it passed through an Italian town have died of their injuries, taking the death toll to 16.

The three-year-old girl and the two-year-old boy had both suffered burns on 90% of their bodies, officials said.

At least a dozen other people remain in a critical state, according to reports.

The accident happened in the northern town of Viareggio on Monday night, when a train carrying gas tanks jumped the tracks and exploded near houses.

Investigators want to know whether a broken axle may have been responsible.

Berlusconi booed

The blast caused two buildings - described as houses or small blocks of flats - to collapse while others were set on fire.

The accident happened shortly before midnight, when most people would have been at home.

Elia Quiroz, who lives near the town's railway station, said he was about to go to bed on Monday night when his kitchen table started shaking.

"Then I heard an explosion and I went outside. I saw flames as high as 30, 40 metres, and I ran," he told the Associated Press.

Fire crews have been working to clear the scene, while residents are still being kept away from their homes amid fears other gas tanks might be at risk of exploding.

By Wednesday morning six of the 13 remaining wagons of the freight train had been made safe, fires services said.

Prime Minister Silvio Berlusconi travelled to the town on Tuesday to witness the emergency operation, but was greeted by a jeering crowd.

The region is left-leaning and it was unclear whether the boos were politically motivated, had any relation to recent scandals involving the prime minister, or were a reaction to the accident, correspondents say.

Local people have demanded to know why gas was being transported so close to people's houses.

The cause of the accident is unclear, though one of the main theories being investigated is that an axle on one of the gas wagons broke, causing it to derail.

Railway unions blamed old and obsolete rolling stock.

But the company that owned the wagon, a subsidiary of US-based GATX Corp, said the unit was new, and that so far there was no evidence of "any connection between the cause of the accident and our wagons".

Earlier police said the incident may have been caused by damage to the tracks or a problem with the train's braking system.