1 hospitalized, building evacuated for hazardous materials investigation in Chatsworth

One person was hospitalized and a building was evacuated during a hazardous material investigation in Chatsworth on Monday. 

Firefighters arrived at a commercial building in the 20700 block of W. Marilla Street at around 1 p.m. after learning of a "vapor cloud" behind the structure, according to the Los Angeles Fire Department. 

More than 30 people were evacuated from the building as a team of investigators arrived to determine the nature of the substance. 

Eight people were evaluated by paramedics at the, one of which, a man in his 50s, required hospitalized with "minor medical complaints," firefighters said. 

No further information was provided.