STOCKHOLM -- Saab Automobile, the troubled Swedish unit of General Motors Corp., has been contacted by some 20 potential buyers, with a sale planned in June, the car maker's lawyer said Monday, according to The Associated Press.

Lawyer Guy Lofalk, in charge of restructuring Saab, said a sale of the company is a "crucial prerequisite for a successful reconstruction."

"Extensive contacts have occurred with interested parties," he said in a court document presented on Monday to creditors in the Vanersborg District Court.

Saab's chief executive Jan Ake Jonsson told Swedish news agency TT that the interested parties, from Sweden and abroad, include industrial firms and investment companies. He gave no other details.