Six heritage buses have been damaged in a fire at a museum near Nottingham.
Fire crews managed to stop the blaze from spreading
Fire crews were called to the Nottingham Transport Heritage Centre in Ruddington early on Wednesday morning, a fire spokeswoman said.
The fire at the museum near Rushcliffe Country Park was brought under control quickly, but the buses were extensively damaged, she added.
Fire officials said an investigation was under way and arson was being considered as a possible cause.
"The fire started in a row of tightly-parked buses located just outside the centre, but fire crews managed to stop it from spreading," spokeswoman Liz Reeson said.
A volunteer at the centre told BBC News: "It makes you feel sick - there is thousands of pounds of damage and they will all have to be scrapped now."
The centre has a large collection of road and rail transport heritage vehicles and a model railway.