RIVERSIDE, Calif. — Seven people have been taken to the hospital after an unknown white powder was found with a letter sent to a Southern California sheriff’s office.

Riverside County Sheriff’s Department Sgt. Chris Willison says the seven department employees were decontaminated Monday and then taken to the hospital as a precaution.

He says none had complained of medical problems.

Riverside Fire Department Battalion Chief Bruce Vanderhorst told reporters the substance was discovered inside a package on the fourth floor of the Sheriff’s Department’s administration building.

He says the building has been evacuated as hazardous materials crews work to identify the substance.

Author photo
The AP is one of the largest and most trusted sources of independent newsgathering. AP is neither privately owned nor government-funded; instead, as a not-for-profit news cooperative owned by its American newspaper and broadcast members, it can maintain its single-minded focus on newsgathering and its commitment to the highest standards of objective, accurate journalism.