SACRAMENTO (CBS13) – Two men were rescued Sunday morning after their boat capsized in the Sacramento River, according to the Sacramento Fire Department.

Officials said a driver on Garden Highway called it in after they spotted one of the men floating face down. The other man was found passed out onshore.

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Firefighters said the rescue operation posed many challenges.

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Paramedics transported one of the men to UC Davis Medical Center by helicopter while administering CPR.

The other man was revived at the scene and refused further treatment.

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No word yet on his condition or why the boat capsized.