No one was injured after Chapel Hill Fire crews were called to a residential structure fire Tuesday.

Officials say crews responded to 313 Country Club Road just after 10 o’clock Tuesday morning after a caller reported smoke coming from an outside wall. A residential contractor was using a pressure washer to clean the deck when water “appeared to cause an arc on an electrical wire,” according to a release.

Three engines and nine firefighters responded to the scene and were able to prevent the fire from spreading beyond the outside wall.

The official cause of the fire is under investigation.