A fire that damaged the second story of a Huntley apartment complex Tuesday morning displaced three families, according to the Huntley Fire Protection District.

The fire occurred about 6:20 a.m. Tuesday in the 10000 block of Church Street.

No injuries were reported as a result of the fire, but all six units in the apartment building were rendered uninhabitable, Deputy Fire Chief Al Schlick said.

The fire directly damaged two units with smoke and heat damage, Schlick said. Water damage from firefighting efforts occurring in the rest of the building.

Schlick said the cause of the fire remains under investigation, but it is not believed to be suspicious in nature.

Huntley firefighters activated a box alarm upon their arrival, to request assistance from neighboring agencies with the incident and with responding to ongoing emergency calls in the community, according to a Facebook post by the district.