A Miami man has been arrested in the theft of nearly $2 million worth of Bitcoin from a former employer, police said.
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Nahum Reynaldo Castro, 40, was arrested Tuesday on charges including grand theft, money laundering, unlawful use of a communications device, and offenses against computer users, an arrest report said.
According to the report, the alleged victim told investigators he began purchasing Bitcoin as an investment in December 2017.
He said he purchased a hardware wallet, and the setup of the wallet and security of the cryptocurrency assets were handled by Castro, an employee of his since 2013 and an IT specialist, the report said.
By the end of January 2018, Castro had secured over $217,000 worth of Bitcoin for the victim, and the wallet was locked in a safe in the victim’s home until July 2025, the report said.
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In July of 2025, while in the process of moving, the victim accessed the wallet and discovered the Bitcoin was gone.
At the time the value was over $1.9 million, the report said.
It was determined the Bitcoin had been stolen in 2020 by Castro, who stopped working for the victim in 2024, the report said.
The wallet contained a “seed phrase” and the only people who had it were the victim and Castro, and bank statements for Castro showed deposits that corroborated with withdrawals from the Bitcoin account, the report said.
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Castro was booked into jail and expected to appear in bond court on Wednesday.