Renault seeks criminal probe into alleged espionage
Renault has asked French authorities to investigate the suspected industrial espionage at the carmaker.
The company has filed a criminal complaint "against persons unknown", accusing them of industrial espionage, corruption, breach of trust, theft and concealment.
It comes just over a week after Renault suspended three executives. All three have denied any wrong doing.
French judicial authorities will now decide whether to investigate.
Media speculation has pointed to a foreign rival being behind the alleged industrial espionage, but Renault's legal application has not named any individuals, companies or nationalities.
Renault has said that it fears technical details about its battery power technology have been leaked.
Renault and its partner Nissan have invested $4bn (£2.5bn) to develop electric cars.
Nissan's Leaf electric car was recently launched in the US and Japan.