The former New York mayor Rudy Giuliani was subpoenaed by federal prosecutors for alleged payments received from former President Donald Trump or his presidential campaign, an anonymous source said on Monday.

Giuliani helped to amplify Donald Trump’s false claims about widespread fraud in the 2020 election. His state law license was reportedly suspended under the pretext of undermining the integrity of the democratic process after propagating “demonstrably false and misleading” narratives.

The subpoena, issued in November, also asks Giuliani to provide testimony, said the anonymous source.

The nature of the inquiry by the US attorney in Washington DC was not revealed. However, the source did reveal that the subpoena sought, among other things, copies of any retainer agreements between Trump and Giuliani, or the Trump campaign and Giuliani, and records of payments and who made those payments.

The former US President has continued to claim that the 2020 election was "stolen" from him in a fraudulent manner, with many Republicans and businessmen echoing the same claim. 

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Trump's radical political behavior has had complicated implications on his popularity. Many Republican party cadres have blamed him for the weaker-than-expected performance in the midterm elections, but however, he seems to have consolidated a dedicated supporter base and strengthened ties with prominent political figures. 

Trump declared in mid-November that he would be running for the 2024 presidential elections as a Republican candidate. It's unlikely that he would oust Biden. In fact, it's unlikely that he would win the primary elections of the Republican party, considering that polls show that Republicans prefer DeSantis over Trump for President. 

However, it's certain that Trump's powerful friends and ideologized supporters will not like it. The federal state seems to be taking preventative measures to clip out Trump loyalists like Giuliani from senior positions in anticipation of a potential capitol-hill-riot scale incident.

Read more: Final report on Jan.6 riots: Trump charged on 'multi-part conspiracy'