Two cars have collided in Stenungsund municipality. Four people have been taken to hospital, two adults and two children.
The children's condition is serious but stable, says Lisa Johansson, press officer at Sahlgrenska hospital, to SVT News.
The alarm came in at 15.15.
It is supposed to be a head-on collision, says police spokesperson Helene Ramsmo to ST-tidningen.
A report of reckless driving has been filed.