SALT LAKE CITY — A Utah woman has been arrested for investigation of possessing a biological agent of mass destruction.

The case was investigated by both federal and state authorities. As of Thursday, neither the State Bureau of Investigations or FBI would release details about the arrest, but both stressed there was no safety risk to the public. The U.S. Postal Inspection Service also participated in the investigation.

According to a Salt Lake County Jail booking affidavit, Janie Lynn Ridd, 50, was arrested Wednesday for investigation of possessing a weapon of mass destruction.

“Through an investigation, officers learned a subject later identified as Janie Lynn Ridd purchased a weapon of mass destruction ... a biological agent online,” the affidavit states. “Subsequent investigation found Ridd’s statements to be misleading and it was learned Ridd did not provide evidence to show she has lawful authority or use to possess a biological agent.”

Police emphasized Thursday that while the allegation supporting Ridd’s arrest fits into the category of possessing a weapon of mass destruction, they do not believe Ridd intended to carry out any kind of mass destruction.

“Law enforcement officials became aware of Ridd attempting to purchase a possible biological agent. They were able to safely monitor Ridd’s activity. After which, Ridd was arrested. There was never a threat to the general public prior to, or after, Ridd’s arrest,” the Utah Department of Public Safety said in a statement.

According to Utah Code, a biological agent of mass destruction is defined as “any microorganism, virus, infectious substance, or biological product” that is capable of causing death or destruction, deterioration of food or water supplies, or harmfully alters the environment.

Federal and state investigators would not say Thursday what the woman was in possession of, but noted more information would come out when formal charges are filed. Ridd is facing potential federal charges.