MOORPARK ( — Authorities said a suspicious and threatening letter containing a white powdery substance was sent to the Moorpark Unified School District Friday.

Officials received a call about the suspicious letter around 1:45 p.m. They evacuated the building as a precaution.

The Ventura County Sheriff’s Department investigated along with a Ventura County Fire Department Haz-Mat team.

The Fire Department squad collected and analyzed the substance in the letter and determined it not to be harmful. A test for ricin and anthrax were both negative. They believe the substance to be a common household product. The powder is scheduled to undergo further testing at an FBI lab.

No suspects were named and no injuries were reported. Sheriff’s deputies said a small number of employees who came in contact with the letter and substance were briefly quarantined.

Authorities said an investigation into the letter is on-going. The Ventura County Sheriff’s East County Major Crimes Unit is heading up the investigation.

Ventura County Fire Hazmat, Ventura City Fire Haz-Mat, AMR Ambulance, Los Angeles County Sheriff’s Chemical, Biological, Radiological and Nuclear (CBNR) Unit, County Environmental Health, and the FBI assisted the Sheriff’s Department in the incident.

Anyone with information regarding the suspicious letter can contact Detective Mike Ferguson at (805) 494-8222 or email:


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