CLOVERDALE (CBS / AP) — Authorities say three people have died in a fire that started after a loud boom at a mobile home park in Cloverdale.

The fire was reported early Monday morning by residents at the Briarwood Mobile Home Park.

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Sonoma County Sheriff’s Lt. Dennis O’Leary said two adults and a child died in the blaze.

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Cloverdale Fire Department battalion chief Rich Blackmon said about half the structure was on fire when crews arrived, and that the victims were found in a room filled with thick smoke.

The coroner’s office said it would identify the victims Tuesday after fire detectives submitted an investigative report.

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