WATCH: Explosive Dutch documentary says Trump has deep ties to Russia's mafia underworld

A Dutch TV documentary alleges that President Donald Trump has extensive connections to Russia's ruling oligarchs and a history of illegal racketeering.

"Donald Trump's business partners have included Russian oligarchs and convicted mobsters, which could make the president guilty of criminal racketeering charges," wrote Steven Rosenfeld at AlterNet on Friday.

He continued, "That's only one of the eyebrow-raising takeaways from a 45-minute Dutch documentary that first aired last week, 'The Dubious Friends of Donald Trump, Part 1: The Russians.'"

The 45-minute documentary was produced by Zembla TV and examines Trump's alleged relationship with Russian mobster Felix Sater -- which Trump reportedly took pains to hide from regulators.

It also looks at Trump's arrangements with wealthy Russians that apparently allow them to move their money outside Russia and details the elaborate financial networks these families use as a "pyramid scheme for money laundering," Rosenfeld said. "The financial trail exposed raises questions about whether Trump fired FBI Director James Comey because the FBI's investigation of his campaign's collusion with Russia was encroaching into Trump's world of dark money and dubious business partners."

Zembla promoted the documentary by saying, "For months, the FBI have been investigating Russian interference in the American presidential elections. ZEMBLA is investigating another explosive dossier concerning Trump’s involvement with the Russians: Trump’s business and personal ties to oligarchs from the former Soviet Union. Powerful billionaires suspected of money laundering and fraud, and of having contacts in Moscow and with the mafia. What do these relationships say about Trump and why does he deny them? How compromising are these dubious business relationships for the 45th president of the United States? And are there connections with the Netherlands? ZEMBLA meets with one of Trump’s controversial cronies and speaks with a former CIA agent, fraud investigators, attorneys, and an American senator among others."

Zembla has also released Part Two of the series, "The King of Diamonds," which explores Trump's relationship with Israeli billionaire Lev Leviev, who is suspected of trading in blood diamonds.

Watch the English language version of "The Dubious Friends of Donald Trump," embedded below:

Part Two, "The King of Diamonds" is also available: