(Reuters) -Tesla's top sales executive in North America, Troy Jones, has left the electric vehicle maker in the latest senior departure at the company, the Wall Street Journal reported on Tuesday, citing people familiar with the matter.

The vice president of sales, service and delivery in North America - Tesla's biggest market - Jones has been with the company for 15 years.

Tesla and Jones did not immediately respond to Reuters' requests for comment.

Shares of Tesla fell more than 1% following the report.

The reported exit comes at a time when Tesla is grappling with flagging sales, as demand in Europe and North America crumble amid Tesla's aging vehicle line-up and increased competition from rivals offering more affordable alternatives.

Tesla has seen a wave of high-level executive departures since early last year, including key figures like CEO Elon Musk's confidant, Omead Afshar, chief battery engineer Drew Baglino and global public policy head Rohan Patel.

The head of Tesla's Optimus humanoid robot team, Milan Kovac, announced he was leaving in June, and top battery executive Vineet Mehta did so in May.

Their departures, along with others in legal and supply chain leadership, have raised questions about internal stability at the company as it navigates a sales slump and a shift to robotics and self-driving technology.