Guelph Fire crews were called to a basement blaze in a home on Lyon Avenue in the city just after 2:30 a.m. Thursday morning.
No one was home at the time ---and when crews arrived, they found heavy smoke in the basement.
The fire was quickly extinguished.
There were no injuries reported.
A cause and damage estimate is not known, however the Guelph Fire Prevention Bureau has been called in to investigate.