Investigators find no cause for deadly 'Conception' boat fire

A law enforcement official says investigators that examined the burned-out wreckage of a scuba diving boat haven’t been able to determine what ignited a fire that killed 34 people off the California coast.

An official with knowledge of the investigation says a two-week examination of the Conception ended Friday without a conclusive cause. The person wasn’t authorized to release the information publicly and spoke on the condition of anonymity.

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The official says parts of the vessel have been sent to labs for additional testing.

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The blaze is the subject of a federal criminal investigation, led by the Coast Guard, the FBI and the U.S. attorney’s office in Los Angeles, as well as a safety inquiry by the National Transportation Safety Board.

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