Justin Sun, owner of crypto exchange Poloniex, which has recently suffered a hacker attack, has sent a message to the attacker informing him that he has confirmed his identity and offering him a $10 million reward in exchange for the stolen funds.
According to the businessman, police in China, the United States and Russia are already involved in the case.
He has threatened the attacker that if he does not transfer the funds by November 25, law enforcement officers "from several countries will take action."
One user has offered to help Sun identify the attacker in exchange for a refund of 386 ETH lost in the $196 million hack of Euler Finance back in March.
He has said:
"He is not from Russia, he is from Poland."
Poloniex lost nearly $125 million in cryptocurrencies on November 10 as a result of the attack.