Further details of the threats specified in court documents during the past few weeks show Cross left voicemails early on the morning of April 17 to both Tester’s Billings and Washington, D.C., offices.

In one, he said that Tester and his family were “gonna die a horrible death,” and in another, he said: “I’m gonna kill every single one of your (expletive) family members,” according to prosecutors.

Eight days later, Google contacted the Federal Bureau of Investigation flagging comments made under Cross’s YouTube account in which he threatened to hunt and kill transgender people as well as Biden. When Cross was interviewed by prosecutors, he admitted to leaving the voicemails as well as the YouTube comments, according to the U.S. Attorney’s Office.

Court records show that Cross and prosecutors came to the agreement at the end of November, and Cross formally changed his plea at a hearing on Friday. He had originally pleaded not guilty to the counts.

Now that the court has accepted the agreement, Cross faces a penalty of up to 10 years in prison, a fine of up to $250,000, and three years of supervised release to follow for the count of threatening to injure or kill a U.S. senator.

Cross is scheduled to be sentenced at a hearing set for May 1. He will remain in the custody of the U.S. Marshals Service until then.

In August, a Kalispell man was sentenced to nearly three years in prison for similarly threatening to kill Tester in a phone call he made last January.