A Guelph woman has been charged with arson after setting her spandex pants on fire and leaving them to burn Tuesday morning.

According to a police press release, officers responded to an address in the 500 block of Woolwich Street around 5 a.m. after receiving a request from the fire department who had fought a small fire in the building's stairway.

"Police investigation discovered that a female had set her spandex pants on fire and left them in the stairwell," stated the release.

The 22-year-old whose pants were burning was located at 8 a.m. and arrested. She has been charged with arson and breach of probation.