By CBSLA Staff

GOLETA (CBSLA) — Crews were searching the water off the coast of Goleta Beach Park after a small aircraft went down soon after departing from Santa Barbara Airport.

Officials said four people were possibly in the water following the incident, which unfolded earlier Sunday. The crash happened 2.5 miles from the airport.

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Crews in the water and overhead in a chopper were involved in the search efforts. It remains unclear what caused the single-engine aircraft to go down.

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The Coast Guard has taken over the recovery operation and the Los Angeles County Dive Team was also called in to help.

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The cause of the crash remains under investigation.