(CNN) Rudy Giuliani, President Donald Trump's personal lawyer, left two apparently unintended voicemails on a reporter's phone this fall in which he discussed his need for hundreds of thousands of dollars and disparaged the Biden family, NBC reported on Friday.

The unwitting calls and messages from Giuliani, colloquially called "butt-dials," come as sources tell CNN that Giuliani has been approaching defense attorneys for possible representation following escalating reports regarding a federal investigation into his dealings in Ukraine.

"Tomorrow, I've got to get you on Bahrain. You've got to call," Giuliani tells an unidentified associate in an October 16 voicemail posted by NBC.

"The problem is we need some money," Giuliani later adds when referencing a "Robert" who the unidentified associate said was in Turkey, pausing for several seconds before specifying, "We need a few hundred thousand."

Giuliani told CNN's Dana Bash on Friday that the voicemail is "helpful because it shows that I don't do anything dishonest," saying it was completely unrelated to anything in Ukraine but declined to specify to what it was related.

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