Authorities were searching for a missing person in an open field on Turtleback Road between Beacon Hill and West Valley Brook roads in the Califon section of the township Thursday night.
A helicopter was assisting with the search from about 9:30 to 10:20 p.m. Authorities from the New Jersey State Police Aviation Department said the helicopter left the scene, but was requested to be put on standby by the Washington Township Police, and the investigation is ongoing.
Police could not immediately release further details, and as of 10:40 p.m. the dispatch center could not confirm the incident had come to an end.
Patch will continue to update this story as more details become available.