MODESTO (CBS13) — Three people have been taken to the hospital after an early morning fire at a Modesto apartment complex on Monday.

Modesto Fire says their crews responded to the scene along the 1300 block of Celeste Drive a little before 4:30 a.m.

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Firefighters say the incident quickly went to three alarms. Several agencies from around the area responded to help, including Ceres Fire and the Stanislaus Consolidated Fire Protection District.

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Firefighters say one building at the complex caught fire. A total of eight apartment units suffered significant damage, with firefighters saying a total of 12 people having been displaced.

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Exactly what caused the fire is under investigation.