SUISUN CITY (CBS13) — Crews say a grass fire that got dangerously close to some apartments in Suisun City is under investigation.

The flames were first reported a little after midnight Tuesday near Sunset and Railroad avenues.

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With the Red Flag weather conditions, a first alarm response was immediately called. Several engines responded to the scene and crews quickly started attacking the flames.

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Firefighters were able to stop the flames from spreading to the nearby apartments.

No injuries were reported.

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The fire has been deemed suspicious, the Suisun City Fire Department says. No signs of a homeless camp near the area of the fire was found.