The owners of a power boat that capsized last month at Lake Tahoe during a sudden violent storm, killing eight people in a tragedy that drew national attention, had both completed a boating course and passed a safety exam as required under California state law.

An initial report finds none of the eight people killed when a boat capsized on Lake Tahoe last month were wearing life vests. Investigators said Wednesday that the weather was mostly calm when

None of the eight people who died after a boat capsized on Lake Tahoe in California were wearing life vests, federal investigators said.