Chief Superintendent Joe Ruddy, who has been leading South Wales Police investigations into this morning's collision in Rhoose, says investigations will continue to establish exactly what happened.
More top news
The Welsh Government is imposing 50 mph speed limits on five sections of road where levels of nitrogen dioxide (NO2) are above legal limits.
The discovery of the bomb sparked a major police and army operation.
The opera star from Neath has announced the birth of her second child - Xander.