A large fire which destroyed a former RAF building near Lincoln may have been started by arsonists, police say.
Nocton Hall was destroyed in the fire
At its height, about 70 firefighters fought to control the blaze at Nocton Hall, which broke out just before midnight on Saturday.
A nearby nursing home, with about 27 people, was evacuated as a precaution, but nobody was injured.
An investigation is continuing into the cause of the fire at the hall, which was once part of RAF Nocton Hospital.