Shocking videos are circulating on social media showing a road rage incident in Bridgend in which one car pursues and rams another on a busy road before the driver gets out and smashes all the windows of the second vehicle.
Another, dashcam, video from an oncoming vehicle has also been shared showing the incident from another perspective. In it, two vehicles can be seen heading towards the camera with one coming alongside the other, striking it, and partially being knocked into the air by the impact and almost flipping over.
The main clip has already been watched over half a million times on social media. And thousands of people have commented sharing their shock in the comments section. You can get more Bridgend news and other story updates straight to your inbox by subscribing to our newsletters here.
Read more: The people most wanted by police in Wales right now
The clip appears to have been filmed by the driver and shows the cars apparently travelling at high speed through busy residential streets and on dual carriageways. On a number of occasions it looks like oncoming traffic has to take avoiding action to prevent a collision.
But the two vehicles involved in the chase do collide, with the car behind ramming the one in front on a number of occasions and seemingly trying to push the other car forwards as its tyres squeal and smoke.
At one point when both vehicles stop, the driver of the pursuing car exits their vehicle and shouts at the occupant of the other car. They then return to their vehicle to retrieve an object which they then use to smash most of the car's windows as the driver cowers inside and is covered in glass fragments.
The chase then begins again with more near collisions and actual impacts between the two vehicles, as other traffic tries to negotiate the same stretches of road. Blood is visible on the steering wheel of the car where the filming is being carried out and at one point the driver looks down to blood on their hand, suggesting they injured themselves in the attack on the other vehicle.
South Wales Police have since confirmed they are investigating. A police spokesperson said: "We're aware of a video circulating on social media of dangerous driving involving two cars." They said a man, aged 20, from Bettws had been arrested in connection with the incident on suspicion of dangerous driving, criminal damage and affray.
"He has been taken to Queens Road police station in Bridgend. Enquiries are ongoing to locate a second individual."