A man in his 60s has been taken to hospital after crashing into three parked cars in Harpenden this morning.
Emergency services were called to Piggotshill Lane at 9.12am after the man driving a silver Vauxhall Saphirra crashed into a grey Seat Ibiza, grey Ford Focus and a red Mitsubishi ASX.
The driver was taken to Watford General Hospital.
Charlotte Parker, spokesman from the East of England Ambulance Service, said: "A man in his 60s was taken to Watford General Hospital for further assessments.
"It is thought he may have been unwell at the wheel, but we are not sure."
Police say they are looking in to the reasons behind the crash.