Two young children and a woman were left seriously injured after being hit by a car near a holiday park.
Police said the incident happened shortly before 5.20pm on Friday near the United Farm Holiday Centre at Brean Sands, Somerset.
An air ambulance took the woman to Southmead Hospital while the two children were airlifted to Bristol Children's Hospital.
Police have closed a number of roads as they continue their inquiries.
A spokeswoman for the holiday park said: "All we know is that there has been an accident outside the resort. We don't have any more information".