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Police have said a main road will stay closed until noon after a serious crash.
Officers and firefighters were called to the A26 Hadlow Road, Tonbridge, at about 4am after a smash involving one car.
Emergency workers found the car on its side and a man trapped inside.
They helped with medical treatment and used heavy rescue equipment to get to him.
He was handed over to paramedics.
Police said the road will stay closed into this morning and appealed for information.
Anyone who saw a silver Renaul Clio at about the time of the accident in the Tonbridge area should call 01623 798535 quoting CAD 19-223 SCIU PG.
The South East Coast Ambulance Service has been contacted for comment.