Jaguar Land Rover has confirmed that some data has been affected during a cyber incident last week.
The company said that it is conducting a forensic investigation and has informed the relevant regulators.
The car manufacturer added that it will contact customers if it finds that their data has been impacted.
Since it became aware of the cyber incident, Jaguar Land Rover said it has been working around the clock, alongside third party cybersecurity specialists, to restart its global applications in a controlled and safe manner.
The company did not say which data or parts of the business had been compromised.
The cyber incident coincided with the release of new car numberplates on 1 September.
At the time, the company said while there was no evidence that customer data had been compromised, retail and manufacturing operations faced significant disruption.
According to a report by the BBC, a group which calls itself Scattered Lapsus$ Hunters, which was behind this year's cyber- attacks on UK retailers including M&S, has claimed responsibility for the incident.
On learning about the cyber incident, Jaguar Land Rover halted all production at factories in Solihull, Halewood and Wolverhampton.
According to the BBC, the affected plants in the UK are not expected to restart production until later this week and worldwide production of around 1,000 vehicles a day has been halted.
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