German prosecutors open investigation into former Volkswagen CEO Martin Winterkorn

BERLIN, Germany -- German prosecutors have opened an investigation against former Volkswagen CEO Martin Winterkorn in the company's emissions-rigging scandal.

Prosecutors in Braunschweig said Monday that the investigation would concentrate on the suspicion of fraud committed through the sale of vehicles with manipulated emissions data.

It added that the probe aims to establish who was responsible. Prosecutors have received a number of criminal complaints in the case, including one from Volkswagen itself that doesn't name any suspects.