Police in Germany have removed what they say could be a 'significant clue' from the home of the co-pilot who's believed to have deliberately killed 149 passengers and crew by crashing a Germanwings flight in the French Alps.
Detectives have been searching two addresses linked to 27-year-old Andreas Lubitz - searching for materials that might show motivation for the crash.
Airlines across Europe are being asked to review their procedures following the disaster - after Lubitz locked himself in the cockpit by himself.
Jim McAuslan from the British Airline Pilots' Association says the incident would have been impossible to predict.
