I read that they have Icelandic investors and for some reason are re-registering the aircraft TF- something.
They also on their website make a mistake of, i quote "City Star Airlines Dornier 328 Turbo Jet Aircraft: The 32 seat Dornier 328 Turbo Jet aircraft is a German technologically advanced regional turboprop airliner" They call it a Turbo Jet then a Turboprop!!