LOS ANGELES — A man who allegedly sent a co-worker a phony anthrax letter has been charged with making a criminal threat and could face up to six years in prison if convicted.
Robert Michael Guerrero, 38, of Glendora was charged Tuesday.
He allegedly passed a co-worker at Aerosol Service Co. in Industry an envelope containing a white powder with a typewritten message that “you’ve been infected,” according to a statement from the Los Angeles County district attorney’s office.
An investigation of the Oct. 24 letter determined that the powder was not anthrax and Guerrero was arrested Monday after authorities used a bloodhound to track the person who allegedly sent the letter, authorities said.
Guerrero was charged with one count each of threatening to use a weapon of mass destruction and making a criminal threat. He could face up to six years in prison if convicted, along with an additional year for an allegation that Guerrero is a convicted felon. He was convicted of grand theft in 1995.