Volkswagen managers were warned about diesel probe in May 2014: sources

Frankfurt

A HIGH-RANKING employee warned senior Volkswagen managers in May 2014 that US regulators might examine car engine software as part of an investigation into pollution levels, two sources familiar with the matter said on Sunday.

The warning came in the form of a letter, which was sent more than a year before the German carmaker's public admission that its cars had been equipped with software to manipulate emission test results, the sources said, raising…