The 36-year-old man was charged Thursday with conveying threats while talking to tellers last month at Zions First National Bank in St. George, Utah.
Bearnson said Murray was arrested Friday and was in federal custody in Nevada. She said he likely will get a court date there Monday.
Murray is originally from Rexford, N.Y.
He was described by his father and former neighbors in Rexford as troubled but not dangerous, known for strolling down a street wearing a cape while talking to himself.
"He's sick. He's been sick for about 10 years," Michael Murray, his father, told the Times Union of Albany, N.Y. "I hope they find him."
In charging documents filed Thursday, the Secret Service said Daniel Murray made bizarre statements while opening - and then closing within weeks - an $85,000 savings account.
First, he demanded to know if Zions First National Bank was solvent, saying, "I'm sure if citizens happen to lose their money, they will rise up and we could see killing and deaths," bank tellers told a Secret Service agent.
On May 27, as a teller counted out bills no larger than $50, Murray delivered a rambling discourse on the probability of economic and social disorder, ending with "We are on a mission to kill the president of the United States," a bank employee told the Secret Service.
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