Police in Newport Beach warned Friday of an ongoing investigation involving hazardous material that led to roadway closures as people visited the beach on a hot holiday.

As officers assessed the situation, Carnation Avenue between Bayside Drive and Coast Highway was shut down, just a few blocks from China Cove Beach.

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While authorities did not say what the hazmat situation involved, they asked residents to stay indoors. Visitors were also urged to avoid the area.

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