UPDATE @7:15 a.m.
Fire crews have left the scene of a Springboro apartment after investigating a haze on the third floor.
Firefighters said residents on the third floor were moved down to the first floor of the building during the investigation, but no one was evacuated.
Nothing was found to be on fire.
A Springboro apartment building is being evacuated as crews investigate a reported structure fire.
Initial reports indicate there is a haze on the third floor of the Springboro Commons apartment building on Pioneer Boulevard, and fire crews are going door to door to make sure residents have evacuated.
No injuries have been reported.
Mutual aid has been requested from several area fire departments.