SACRAMENTO (CBS13) – Forward progress has been stopped on a 21-acre vegetation fire in the American River Parkway, the Sacramento Fire Department said on Sunday.

The fire department said the cause of the fire remains under investigation but a man has been detained for questioning.

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Around three alarms worth of equipment were used in the firefight and ongoing efforts to extinguish the blaze, which was in the Lower American RIver Parkway, officials said.

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A large plume of smoke could be seen in the sky above the area.

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Photos released by Metro Fire show how close the fire was to structures in the area. View the photos below.