White Powder Sent to L.A. County Judge Possibly Linked to Series of Such Letters: FBI

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A hazmat team responds to the Stanley Mosk Courthouse on Feb. 19, 2015. (Credit: KTLA)

The Los Angeles County civil courthouse in downtown L.A. was deemed safe Thursday after a hazardous materials team and the FBI investigated a white substance sent in an envelope to a judge that may be part of a series of such letters, authorities said.

A call about a suspicious letter sent to court personnel at the Stanley Mosk Courthouse came in about 9:20 a.m., prompting a hazmat detail to respond, according to Deputy Sara Rodriguez with the Los Angeles County Sheriff’s Department.

The incident is being investigated by the FBI’s Los Angeles Field Office as part of a series of letters containing white powder that were sent to government buildings on Wednesday and Thursday, according to Laura Eimiller, a spokeswoman for the office.

Hazmat vehicles were stopped outside the Stanley Mosk Courthouse on Feb. 19, 2015. (Credit: KTLA)

Hazmat vehicles were stopped outside the Stanley Mosk Courthouse on Feb. 19, 2015. (Credit: KTLA)

The FBI was working on the case with the Los Angeles and Burbank police and fire departments, along with the L.A. County Fire Department and the U.S. Postal Inspection Service, Eimiller said.

Some of the letters were addressed to specific officials, but it was not clear from the FBI’s statement if they contained printed material or just powder.

No one who handled the letters had symptoms and there was “no stated threats” in connection with them, Eimiller said.

On Thursday at Stanley Mosk Courthouse, the “white substance” was found in an envelope, but no one was injured and no evacuation took place, according to the Los Angeles Fire Department.

A sheriff’s spokesman on scene said the response was prompted by a letter sent to a judge, but it turned out to be nothing of concern.

The investigation concluded at about 12:20 p.m. with the building having been deemed safe, according to a sheriff’s news release. The nature of the powdery substance collected was set to be determined by county public health personnel.

Several large sheriff’s vehicles were stopped in front of the courthouse entrance, at 111 N. Hill St. (map) in downtown L.A.’s civic center, aerial video showed. The building is the hub of the nation’s largest trial court system.

KTLA’s Feven Kiflegiorgis contributed to this article.