UPDATED: Suspicious substance found at Rowland Heights Post Office determined to be baby powder

ROWLAND HEIGHTS — A hazardous materials team responded to the U.S. Post Office in Rowland Heights Sunday after a suspicious white powder — ultimately determined to be baby powder — was found at the facility, authorities said.
The incident began about 9:50 a.m., when someone called from the post office, 1521 Nogales Street, to report finding a “white, powdery substance” in an area where boxes are kept, Los Angeles County sheriff’s Sgt. Robert Causey said. There was no note or other suspicious material accompanying the powder.
Firefighters who arrived to take a look at the situation summoned a sheriff’s hazardous materials team to continue the investigation, the sergeant said.
Officials ultimately determined that the substance was ordinary baby powder and declared safe about noon.

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