A small fire broke out at a north Houston warehouse office Monday.

Firefighters were called to the 11200 block of Green Crossing Boulevard at Gears Road shortly after 8 a.m.

The fire was contained to the office and was quickly tapped out.

The hazardous materials unit was sent to the scene as a precaution because the warehouse contained chemicals. Officials said since the fire did not spread, there was no danger.

No one was injured.

The cause is under investigation.