A woman is in a critical condition after she was hit by a double-decker bus, police have said.
The 32-year-old woman was struck by the vehicle as it was driven uphill in a bus lane on Fishergate Hill in Preston at about 19:00 GMT on Friday.
Nobody on the bus was injured.
Police are appealing for witnesses to contact them, especially a male pedestrian who stopped at the scene but left before officers arrived at the scene.
Sgt Phil Baxendale, from Lancashire Police, said: "We are conducting thorough CCTV enquiries of our own, however if you have a business in the area and your cameras may have captured the incident, please let us know."