The FBI found a suspicious letter addressed to Lt. Governor Deidre Henderson’s staff office.

The envelope, containing white powder and signed by the so-called “United States Traitor Elimination Army,” was intercepted in Reno, Nevada, Lt. Gov. Henderson’s office said.

Law enforcement officials are reportedly investigating the threat and testing the substance.

Lt. Gov. Henderson said the incident is the latest tactic in a nationwide trend of threats and intimidation toward election officials.

“But we will not be intimidated,” she said. “I am grateful for the swift action of postal workers and law enforcement and the perseverance of election workers who show up and do their jobs every day despite all the rhetoric and risk. We love them. We owe them. They are heroes.”

Lt. Gov. Henderson’s office said Utah is one of at least 20 states targeted recently.

“The lieutenant governor and state law enforcement officials will continue to monitor the situation and take all necessary precautions to ensure the safety of election workers and maintain an orderly election,”Lt. Gov. Henderson’s office said.