Two trucks and a car have collided on the N4 Montrose outside Nelspruit injuring three people.
ER24 paramedics and other services arrived on scene and found both trucks jack-knifed and obstructing lanes.
One of the trucks lost its load. Paramedics assessed people on scene and found that one man sustained moderate injuries and two women sustained minor injuries.
Patients are being transported to hospital for further medical care.
The exact cause of the collision is unknown however authorities were on scene for further investigations.
Motorists are advised to use alternative routes such as Schoemanskloof.