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Los Angeles police headquarters evacuated for suspicious powder

The powder turned out not to be a threat, but personnel had to leave headquarters for almost two hours.

LOS ANGELES — The Los Angeles police headquarters was evacuated for almost two hours Thursday night before investigators determined that an envelope containing a suspicious powder was harmless.

Police gave the all-clear at about 9:40 p.m. (12:40 a.m. ET Friday) and said normal operations were resuming.

Dennis Romero contributed.