Two motorcyclists are being treated for serious injuries following two separate road crashes in Lincolnshire.
A motorbike collided with a car on the A1084 at Bigby Hill, near Caistor, just after 1700 BST on Saturday.
A police spokesman described the male biker's injuries as serious and life-changing.
The other crash involved a biker who came off a Ducati on the A16 at Louth at about 1300 BST on the same day. He sustained severe injuries.
Lincolnshire police have appealed for any witnesses to either incident to contact them.