A top special agent from the Internal Revenue Service has told a conference that NFTs and crypto are the “future” but highlighted that fraud and manipulation is still rampant in the space.

Ryan Korner from the IRS Criminal Investigation’s Los Angeles field office made the comments virtual event held on Tuesday by the USC Gould School of Law, Korner. Bloomberg reports Korner said:

He told the event the IRS CI division acknowledges the significant growth of the crypto sector, but noted that the usage of digital assets has not been limited to payments and trading. He outlined various illicit behaviors such as fraud, including money laundering, market manipulation and tax evasion.

Korner highlighted market manipulation in particular, pointing to high-profile investors having the ability to sway asset prices with a single Tweet.

He spoke about the involvement of celebrities in the space, perhaps thinking of examples as Kim Kardashian and Floyd Mayweather — who recently got into hot water over promoting an allegedly fraudulent token dubbed EthereumMax. Korner said:

During the event, Korner stated the reason the division was actively training and educating its agents on crypto and NFT regulation, was because “this space is the future” and wasn’t going anywhere.

Korner also stated that the IRS has collaborated with other federal agencies, including the Justice Department to “make sure everyone is on the same page and staying ahead of the criminals,’ he said.

Related: Crypto crime’s overall impact set to fall even further in 2022: Chainalysis

IRS investigators seized $3.5 billion worth of cryptocurrencies tied to financial crimes during the fiscal year 2021. This accounted for 93% of all the assets seized by the division in that