LOS ANGELES (CBSLA) — Authorities Sunday were looking into a white substance that forced the evacuation of a plane at Los Angeles International Airport.

About half an ounce of the powder was found just before 11 p.m. Saturday.

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No one was hurt.

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Fire officials have not said what airline was affected, nor whether the plane was arriving or departing from LAX.

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It remains unclear at this hour what the white powder was.