Authorities are investigating what sparked a fire at a north Harris County apartment complex.

The fire broke out around 6:45 a.m. Tuesday at the Polo Club on Cranbrook apartments in the 14500 block of Ella Boulevard.

Firefighters with the Little York Volunteer Fire Department responded to the fire in the attic of an apartment on the second floor.

Fire crews arrived to find flames shooting through the roof.

Officials say the fire spread to a second apartment, but firefighters were able to contain the flames after about 30 minutes.

No injuries were reported.

Officials say the cause of the fire is under investigation.