Oldsmar, Florida -- Firefighters are on the scene of a fire at the Lockheed Martin Plant in Oldsmar. Smoke and flames could be seen coming from the building's roof.
Photo Gallery: Fire at Lockheed Martin plant
Initial reports indicate that the fire began as roofers worked on the building Tuesday afternoon. Extra fire units were called to the scene, as hazardous chemicals are believed to be housed inside the facility.
Sky 10 footage shows the fire appears to be localized to the roof only, and that firefighters had mostly extinguished it shortly after 2 p.m.
The response was as high as a three-alarm fire at one point, but it has since been called down to two-alarm.
In a statement, Lockheed Martin says the building was immediately evacuated and no injuries were reported.
Lockheed Martin creates aerospace, defense and security technology. A Lockheed Martin spokesperson says the Oldsmar facility employs about 500 people, and that the plant manufactures and assembles military and commercial products.
10 News will have more on this developing story.