The US Department of State said it is aware of the reports of the detention of its citizen in the Nigerian capital, Abuja.
Binance executive, Tigran Gambaryan was arrested last month – together with his colleague, Nadeem Anjarwalla, who holds both British and Kenyan passports – as part of a tax evasion probe against the cryptocurrency platform.
“When a US citizen is detained overseas, the department works to provide all appropriate assistance,” a spokesperson for the American Embassy in Nigeria told the BBC.
The embassy declined to provide further comments on the detention citing “privacy considerations”.
Although, Mr Anjarwalla is no longer in Nigerian custody following confirmation by authorities of his escape with a “smuggled passport”, a family source said he left by lawful means.