CEO Herbert Diess has demanded a contract extension and more support for his reform efforts from Volkswagen's stakeholders, but he has met resistance from powerful worker representatives.

Supervisory board chairman Hans Dieter Poetsch, seeking to find a solution, held talks with main stakeholders over the weekend, one source said.

Volkswagen had no immediate comment.

The supervisory board had planned to meet on Thursday.

(Reporting by Jan Schwartz; writing by Kirsti Knolle; editing by Thomas Seythal)