SAN JOSE (CBS SF) — A 3-alarm fire raced through a San Jose townhouse early Thursday, destroying one unit and damaging two neighboring units, authorities said.

A call came in reporting a fire at a townhouse on Don Seville Court at 5:58 a.m., San Jose fire Captain Brad Cloutier said.

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On their way to the scene crews could see flames and smoke coming from the townhouse and the fire was upgraded to two alarms.

Crews arrived on the scene just after 6 a.m. and found that residents had already evacuated the building.

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The townhouse was fully involved and neighboring units were threatened so the blaze was then upgrade to three alarms, Cloutier said.

Fortunately, firefighters were able to limit the damage to two other units and crew knocked down the blaze at 6:53 a.m.

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Nine adults and three children were displaced from three housing units. No injuries were reported and the cause of the fire was under investigation.