A steam train derailed at low speed during a Great Central Railway gala event over the weekend.
The incident happened during a shunting operation at Quorn on Saturday, the second day of the three-day event Swithland Sidings.
Bosses at the Great Central Railway said the train derailed at very low speed on Saturday morning and no-one had been injured. The gala continued as normal.
A GCR spokeswoman said: "We're not sure what happened, the cause is still under investigation. It was a very low impact derailment. Only the driver was on the train."
About 8,000 people visited the site over the three days. The gala featured passenger and freight trains running on the Leicestershire heritage line, and the first few yards of the newly-laid Mountsorrel branch line.