Hopes Argentina sub found dashed after sonar image revealed to be fishing boat

Hopes that the missing Argentinian submarine had been found have been dashed after a blurry sonar image of an object deep in the South Atlantic transpired to be a sunken fishing vessel.

Rescuers had sent an unmanned Russian submersible to review the 60 metre (197 feet) object located at 477 meters (1,565 feet) below sea level.