By CBS13 Staff

SACRAMENTO (CBS13) — Authorities are investigating after three trailers were damaged in a fire at Cal Expo on Monday night.

The fire was first reported a little after 8 p.m., according to the Sacramento Fire Department.

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Crews arrived and found that a total of three trailers were damaged. No injuries were reported, firefighters say.

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It appears the trailers that were damaged were ones being used as COVID-19 isolation units. It’s unclear how many people were inside the trailers and how many people have now been displaced.

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Exactly what started the fire is now under investigation. Due to the area being state property, Cal Fire will be the agency handling the investigation.