Michael Avenatti, the attorney for porn star Stormy Daniels, warned that more "bombshells" are coming after alleging on Tuesday night that President Donald Trump's attorney Michael Cohen received $500,000 from a Russian oligarch after the 2016 election.

"We certainly have next steps planned out," Avenatti said to Anderson Cooper on CNN on Tuesday night.

Michael Avenatti, the attorney for porn star Stormy Daniels, warned that more "bombshells" are coming after alleging on Tuesday night that President Donald Trump's attorney Michael Cohen received $500,000 from a Russian oligarch after the 2016 election.

"We certainly have next steps planned out," Avenatti told Anderson Cooper on CNN Tuesday night. "I hope the president goes on 'Fox & Friends' tomorrow, and then I hope that [Trump lawyer] Rudy Giuliani makes the rounds on Fox. There are more bombshells coming. There's more evidence. There's more information. Because we're so out front on this, people send us information. People want to help our cause."

Avenatti doubled down on his warning, saying on Twitter, "We are just getting started..."

Avenatti's public warnings on Twitter and cable news of more bombshell allegations come just hours after he released a report alleging Cohen of having received around $500,000 from a wealthy Russian oligarch shortly after the 2016 US election.

The investigative report into Cohen's finances by Avennati's firm, titled "Project Sunlight", alleges that Cohen received approximately $500,000 between January and August 2017 from Columbus Nova LLC, an investment company owned by US businessman Andrew Intrater.

Intrater is the cousin of Viktor Vekselberg, a Russian energy tycoon and the founder of Renova Group, a conglomerate with a range of interests in Russia's energy sector. Columbus Nova is a subsidiary of Renova, and Vekselberg was one of several wealthy Russians tied to Russian President Vladimir Putin who were hit with US sanctions earlier this year. Vekselberg was also one of at least six Putin-allied Russians who attended Trump's inaugural celebrations in January 2017.

Avenatti did not make clear in his report the methods of how he was able to obtain the information, which he posted on Twitter. He did not immediately return a request for comment from Business Insider.

Avenatti also detailed other transactions in Cohen's account he said were suspicious, including deposits from the drug giant Novartis and AT&T.