Pieces of lost Japanese stealth fighter found

This picture taken on June 5, 2017, shows the first F-35A stealth fighter assembled in Japan, unveiled at a Mitsubishi Heavy Industries factory in Toyoyama.

Tokyo (CNN)Wreckage from a Japanese F-35 stealth fighter that crashed into the Pacific almost a month ago has been recovered, Japan's defense minister said Tuesday, but the reason for the loss of one of the world's most advanced warplanes remains a mystery.

Pieces of the jet's flight recorder and cockpit canopy have been lifted from the ocean floor, Defense Minister Takeshi Iwaya told reporters in Tokyo.
He described the condition of the flight recorder as "terrible" and said the device's memory part was missing, leaving investigators still wondering how the US-designed jet crashed April 9.
    The jet and its pilot, Maj. Akinori Hosomi, went missing while on a training mission from Misawa Air Base in northern Japan.
      Hosomi, a 41-year-old with 3,200 hours of flight experience, was last heard from when he signaled to his squadron mates that he would have to abort the mission before his craft disappeared from radar.
      A Japan Coast Guard's vessel and US military plane search for a Japanese fighter jet, in the waters off Aomori, northern Japan, Wednesday, April 10, 2019.
      Pieces of the plane's tail fins were recovered from the sea shortly thereafter, but noting else turned up until May 3, when the US Navy-chartered deep-sea diving support vessel Van Gogh collected a part of the flight recorder, Iwaya said Tuesday.
      The US-chartered ship was acting on information gleaned by Japan's deep sea research ship Kaimei, which carries a remotely operated submarine and equipment to grab sample