Authorities said a suspicious and threatening letter containing a white powdery substance was sent to the Moorpark Unified School District.
Part of City Hall was evacuated Thursday after one of Mayor Antonio Villaraigosa’s staff members opened a letter that contained an unknown substance.
An envelope containing white powder was found at CBS Television City Wednesday, marking the third such occurrence since last November.
Police and firefighters responded to CBS studios in the Fairfax District Tuesday afternoon after someone opened a letter that contained an unknown white powder.
A haz mat team is sent to a Lakewood building after white powder was discovered.
The FBI tells CBS 2 and KCAL 9 that they investigated a potential threat sent to the Los Angeles offices of “Dances With the Stars” Friday.