FRANKFURT, Nov 6 (Reuters) - German carmaker Volkswagen said on Sunday that German prosecutors had widened an investigation into suspected market manipulation to include supervisory board Chairman Hans Dieter Poetsch.

The prosecutor's office in Braunschweig had announced the probe in June, targeting former VW Chief Executive Martin Winterkorn and VW brand chief Herbert Diess for suspected market manipulation related to the carmaker's emissions scandal.

(Reporting by Maria Sheahan; editing by Andrea Shalal)