A cyclist is fighting for his life after suffering serious head injuries when his bike collided with a loose skateboard.
Police are appealing for witnesses to the accident, which happened in South Street, Lewes, on Sunday.
The cyclist, a 49-year-old local man, was taken to Kings College Hospital in London by air ambulance following the incident.
He is today said to be in a critical condition.
Sergeant Huw Watts said: "We would like to hear from anyone who saw what happened."
Witnesses to the incident, which happened at around 6.40pm, should phone Sussex Police on 101 or email firstname.lastname@example.org, quoting Operation Padstow.