South Korea's Marine Corps has released footage of Tuesday's helicopter crash in the southeastern city of Pohang that killed five marines and left one seriously injured.<br /> The ten-second clip shows the vehicle crashing shortly after take-off... as its rotor blades fell off.<br />The Marine Corps has launched an official investigation committee to find the exact cause of the accident.<br /> Marine Corps officials said Thursday the investigation committee is also closely consulting with bereaved families of the victims,... to reflect their wishes during the investigation.<br />The MUH-1 chopper was exclusively developed for the Marines by Korea Aerospace Industries, which delivered four of them earlier this year.<br />The Marines had planned to take 28 helicopters by 2023, but that could change based on the results of the investigation. <br />