HARRIS COUNTY, Texas – Fire officials are investigating an apartment fire in a vacant unit at a north Harris County complex overnight.

According to the Harris County Fire Marshall's Office, the W. Little York Fire Department responded at 12:45 a.m. Wednesday to an apartment fire at the Pecan Square village on Cranbrook.

The apartments are located in the 14500 block of Ella just south of Kuykendahl.

When firefighters arrived at the scene, they found flames coming from a downstairs apartment. They made a fast attack and were able to get the fire under control.

The apartment is vacant and it was the couple who live above it who called 911.

Harris County Fire Marshal is investigating the incident.

The upstairs unit was not affected except for smoke, so the residents should be able to stay there.

No injuries were reported.