Federal agents investigating Hunter Biden, the son of US President Joe Biden, believe they have evidence of tax crimes and it will be up to a prosecutor to decide whether to bring any charges, The Washington Post reported Thursday.

The newspaper, citing people familiar with the case, said investigators also believe they have sufficient evidence to charge the younger Biden with making a false statement in connection with a gun purchase.

It would be up to the US Attorney in Delaware, an appointee of former President Donald Trump, to decide whether to file charges against the 52-year-old Biden.

Hunter Biden, a lawyer and lobbyist, acknowledged in a statement in December 2020 that his tax affairs were under federal investigation and denied any wrongdoing.

From 2014 to 2019, while his father was Vice President, Hunter Biden served notably on the board of Burisma, a Ukrainian gas company.

Trump was impeached by the US House of Representatives in 2019 for trying to pressure Ukrainian President Volodymyr Zelensky into digging up what he alleged was compromising information on Hunter Biden.

According to The Washington Post, federal agents believe that they have gathered sufficient evidence to charge Hunter Biden with tax crimes and lying on gun purchase paperwork in 2018.

A lawyer for Hunter Biden, Chris Clark, told The Washington Post that federal agents are not allowed to leak information to the media.

"It is a federal felony for a federal agent to leak information about a Grand Jury investigation such as this one," Clark said in a statement.

"As is proper and legally required, we believe the prosecutors in this case are diligently and thoroughly weighing not just evidence provided by agents, but also all the other witnesses in this case, including witnesses for the defense," he added.

"That is the job of the prosecutors. They should not be pressured, rushed, or criticized for doing their job."

Read more: Russia releases documents on US-funded bio-weapons, Hunter Biden exposed

Hunter Biden has been pursued by a series of scandals and accused of corruption and abuse of his father's influence.

Last April, the US Department of Energy announced the sale of 950,000 barrels of strategic petroleum reserves to Unipec, the commercial arm of China Petrochemical Corporation wholly owned by the Chinese government.

However, information revealed last July that a company co-founded by Hunter Biden owns $1.7 billion in private shares and that it continued to deal with Russia's Gazprom even after US sanctions were imposed on the company.

In February, the Daily Mail revealed in a report that Hunter Biden was working with a Chinese oil company in Kazakhstan that is currently under US sanctions.

Emails obtained by the site said that the US President's son has cooperated with former Kazakh Prime Minister Karim Massimov, who is facing charges of "high treason".

It is noteworthy that Russia said that Hunter Biden helped finance military research into dangerous pathogens at Biolabs in Ukraine, and that was proven to be true via emails from his infamous laptop.

Emails recovered from Hunter's laptop showed that he played a major role in the acquisition of millions of dollars in funding for Metabiota, a Department of Defense contractor specializing in research on pandemic-causing diseases that could be used as bioweapons, which proved the Russian allegations.

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