Gambaryan, the Binance executive facing tax and money laundering charges in Nigeria, left the country after eight months of detention.

In a statement to Cointelegraph, a spokesperson for Gambaryan’s family stated that he left Nigeria on October 23 and that authorities dropped the money laundering charges against him.

The charges by the Nigerian Economic and Financial Crimes Commission were the last legal hurdles Gambaryan faced; because authorities withdrew tax evasion charges in June.

Gambaryan’s wife, Yuki, said: “It is a great relief that this day has finally come. The last eight months have been a nightmare. I didn’t want it to take this long for him to be released, or for his health to deteriorate this much. But now we can focus on healing as a family. “I want to express my deepest gratitude to the US government for its efforts to secure his release.”

Reports from Gambaryan’s family and Nigeria indicate that the Binance executive’s health condition has steadily deteriorated since his detention in February. Along with cases of pneumonia and malaria, he is also reportedly facing a herniated disc problem that may require surgery.

A video shot in September showed Gambaryan struggling to walk to court, prompting backlash from many, including Binance CEO Richard Teng.

Binance executives Nadeem Anjarwalla and Gambaryan went to Abuja, the capital of Nigeria, on February 25 to discuss the activities of the crypto exchange. It was reported that Nigerian authorities investigated “suspicious flows” through Binance’s local arm and detained Gambaryan and Anjarwalla on February 26.

In March, Anjarwalla reportedly escaped from custody and left Nigeria on his Kenyan passport. Reports suggested that he had fled to Kenya and that authorities were considering extradition requests to extradite him to Nigeria. Nigerian authorities have accused two Binance executives of tax evasion.

On March 5, when Gambaryan was in custody, Binance announced that it would terminate its services using the Nigerian naira unit, thus exiting the country’s market. The Nigerian Economic Financial Crimes Commission later indicted Anjarwalla and Gambaryan on charges of money laundering worth more than $35 million.

Gambaryan pleaded not guilty to money laundering charges at a court hearing in Abuja on April 8. His bail application was rejected and he was sent to Kuje Prison.

On May 7, Teng suggested that Nigerian authorities “may have forced exchange representatives to make a settlement payment to eliminate these problems.” In the same month, it was reported that Gambaryan suffered from various health problems, including malaria, during his time in detention.

Calls from U.S. lawmakers increased in June as reports continued of deteriorating health conditions in Nigerian detention.

Former US federal prosecutors and agents have sent a letter to the State Department urging Gambaryan’s release, and some members of the legislature have asked US President Joe Biden to step in.

Representatives French Hill and Chrissy Houlahan visited Gambaryan in jail, reporting that he was “suffering from poor conditions” and had “lost significant weight.”

On June 14, the Nigerian Federal Revenue Service withdrew tax evasion charges against Anjarwalla and Gambaryan. After weeks of delays in the country’s courts, the final money laundering charges were also dropped in October.