LOGAN, Utah - In support of the FBI and U.S. Postal Service, the Utah National Guard's 85th Weapons of Mass Destruction-Civil Support Team (CST) monitored Oct. 3 for hazardous materials at a home in Logan, after letters containing ground caster beans, the substance from which the deadly poison ricin is made, were mailed from the residence to President Donald Trump, Defense Secretary James Mattis and Navy Admiral John Richardson.

"The 85th CST members conducted joint entries with FBI agents in order to provide atmospheric monitoring and assist with evidence collection," said the 85th CST deputy commander, whose name was withheld.