The alarm came at 10 a.m. on Saturday.
Two cars were involved in the accident, which occurred at an intersection at the E4 in Håknäs.
The cars blocked traffic and the emergency services were called to the scene.
According to SOS, it is calm at the scene and the emergency services are cleaning up the road.
According to the Swedish Transport Agency, access to the site is limited until 11.00.
The extent of the damage is unclear.
The text is updated.