Topic - William Clyde Allen Iii

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This undated file photo released by Davis County Sheriff's Office shows William Clyde Allen III. An indictment unsealed Thursday, Oct. 18, 2018, says Allen mailed envelopes to the CIA director and the Air Force secretary as well as Trump and other top officials. Allen pleaded not guilty to seven charges, including threatening to use a biological toxin as a weapon. (Davis County Sheriff's Office via AP, File)

More charges filed against Navy veteran in ricin-letter case

By LINDSAY WHITEHURST - Associated Press

Man charged after toxic letters sent to Trump, other leaders

By LINDSAY WHITEHURST - Associated Press

This undated photo released by Davis County Sheriff's Office shows William Clyde Allen III. Allen, 39, a U.S. Navy veteran in Utah was arrested Wednesday, Oct. 3, 2018, in connection with suspicious envelopes that were sent to President Donald Trump and top military chiefs. The arrest comes after authorities confirmed an investigation into two envelopes once thought to contain ricin and later found to be castor seeds, the substance from which the poison is derived. (Davis County Sheriff's Office via AP)

Utah vet confessed to sending ricin envelopes, officials say

By LINDSAY WHITEHURST - Associated Press

Law enforcement officers participate in an operation at 380 N. 200 West on Wednesday, Oct. 3, 2018, in Logan, Utah. A man suspected of mailing ricin to the Pentagon and President Donald Trump was taken into custody at the scene. (Amy Macavinta/Herald Journal via AP)

US Navy veteran arrested in Utah in suspicious mailings

By LINDSAY WHITEHURST - Associated Press

This undated photo released by Davis County Sheriff's Office shows William Clyde Allen III. Allen, 39, a U.S. Navy veteran in Utah was arrested Wednesday, Oct. 3, 2018, in connection with suspicious envelopes that were sent to President Donald Trump and top military chiefs. The arrest comes after authorities confirmed an investigation into two envelopes once thought to contain ricin and later found to be castor seeds, the substance from which the poison is derived. (Davis County Sheriff's Office via AP)

William Clyde Allen III arrested in Donald Trump ricin letter

By Lindsay Whitehurst - Associated Press