Los Angeles County fire officials said eight people were taken to hospitals to be examined after being exposed to an unidentified white powder at a post office in Pomona.

Inspector Ron Haralson said authorities were called to the post office around 10:15 a.m. Thursday. He said eight people on the loading dock complained of skin irritation after handling a brown envelope containing the powder.

They were taken to hospitals in good condition.

A hazardous materials squad was sent to the scene but the post office was not evacuated.