A motorbike passenger who was critically injured in a crash with a tractor which killed the rider of the bike has also died.
Dale James, 39, from Barrow Haven, died in hospital on Sunday following the collision on the B1211 Brocklesby Road, in Ulceby, on Wednesday.
Motorcyclist Richard Markham, 44, from Ulceby, was also killed in the crash.
The 59-year-old tractor driver, who was arrested on suspicion of causing death by careless driving, has been bailed.
Police have appealed for witnesses to the crash, which involved a black Suzuki motorcycle and a green John Deere agricultural tractor.