Four young people are being treated in hospital following a two-vehicle collision in Fife.
Two female teenagers and two young men were injured in the incident on the B9157 close to Meadowfield, Auchtertool.
Police are appealing for information about the collision, which happened at around 10.20pm on Wednesday.
Police said a Seat Leon car travelling west was involved in a collision with a Ford Transit van heading in the opposite direction.
There were four passengers in the car, including an 18-year-old woman who sustained injuries to her back and abdomen.
She was rushed to Victoria Hospital in Kirkcaldy, where she remains in a serious condition.
The 21-year-old male driver of the car was also taken to hospital, along with a 15-year-old girl and a 17-year-old male who were rear-seat passengers within the same vehicle.
The driver of the van was uninjured.
Inspector Andy Mather said: “All of the occupants within the Seat Leon have sustained various serious injuries and our investigation continues to establish how this collision has occurred.
“If you were on the B9157 near Meadowfield at the time and witnessed what happened then please contact police immediately.
“Likewise, if you have any other information relevant to this inquiry then please also get in touch.”
Those with information can contact the road policing unit in Fife via 101 and quote incident number 4044 of October 3.