TUSTIN (CBSLA.com) — Authorities Monday investigated a fire that erupted in a two-story home in Tustin.

According to the Orange County Fire Department, crews were sent just before 2 a.m. to a home located in the 13300 block of Epping Way.

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Upon their arrival, firefighters saw flames burning in the second floor of the home.

A preliminary investigation revealed the fire broke out in the upstairs bedroom, and spread to the backyard of the property.

Officials said a number of combustibles such as boxes, blankets, furniture, a barbeque, and mattresses were stored in the backyard.

One of the residents suffered from first and second degree burns to his arm and hand after he attempted to extinguish the fire. Paramedics transported him to Western Medical Center in Santa Ana for treatment.

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No other injuries were reported.

Forty firefighters extinguished the flames in just over an hour. Six adults were subsequently displaced due to the extent of damage.

The cause of the blaze remains under investigation.

Officials reported no smoke alarms were installed in the home.

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