PARIS -- Renault stopped production at several European sites on Saturday to prevent the spread of a global cyber attack that hit its computer systems, a spokesman said.
"Proactive measures have been put in place, including the temporarily suspension of industrial activity at some sites," the spokesman said.
The Paris prosecutor has opened an investigation following the cyber attack, a judicial source told Reuters on Saturday. The probe covers "Renault and other possible victims," the source said.
Renault's plant at Sandouville in northwestern France was one of the factories that stopped production, the spokesman said, declining to provide a full list of affected sites.
The manufacturer is the first major French company to report being affected by the ransomware cyber attack that has infected tens of thousands of computers in nearly 100 countries.
PSA Group, Renault's French rival, was not affected, a spokesman said on Saturday.
Meanwhile, production at Renault alliance partner Nissan's manufacturing plant in Sunderland, northeast England, has been affected by a cyber attack that has hit nearly 100 countries, a spokesman for the Japanese carmaker said on Saturday.
“Like many organizations, our UK plant was subject to a ransomware attack affecting some of our systems on Friday evening. Our teams are working to resolve the issue," said the spokesman.
He declined to confirm media reports that production at the plant, which employs 7,000, had been halted.
The plant produces the Nissan Leaf, Qashqai, Note, and Juke along with the Infiniti Q30 and QX30.
On Friday, cyber extortionists tricked victims into opening malicious malware attachments to spam emails that appeared to contain invoices, job offers, security warnings and other legitimate files.
The attack disrupted Britain's health system and global shipper FedEx.