(Reuters) - Hyundai's Ott Tanak crashed out of Rally Finland on Friday and the team said co-driver Martin Jarveoja would remain in hospital overnight for observation.
The Estonian pair extracted themselves from the car unassisted after going off the road on stage three. They received medical attention at the scene before Jarveoja was transferred to hospital.
Hyundai said the car left the road at speed in wet and slippery conditions, rolled and hit a tree. The crew were ruled out for the rest of the weekend.
Tanak started the event in second place in the championship, eight points behind Belgian teammate Thierry Neuville. Finland is the ninth round of the season.
Finland's Kalle Rovanpera was leading Elfyn Evans and Sebastien Ogier in a Toyota one-two-three with just 2.8 seconds between them after the day's first four stages over forest roads on Friday.
Reigning champion Rovanpera and Evans each won two stages.
(Reporting by Alan Baldwin; Editing by Frances Kerry)