Prosecutors on Thursday unveiled threatening text messages by U.S. President Donald Trump's adviser, Roger Stone, to radio host Randy Credico in which Stone urged Credico not to testify about their communications over Stone's efforts in 2016 to learn when WikiLeaks might release more damaging emails about Trump's rival Hillary Clinton.

"Prepare to die ..." Stone wrote in one text to Credico that also included an obscenity. "You are a rat."

In text messages, shown as exhibits during Stone's criminal trial in federal court in Washington, Credico confronted Stone about his September 2017 testimony to the House of Representatives Intelligence Committee.