An ex-employee of a New Jersey cryptocurrency trading company is claiming in a whistleblower suit that he was fired after accusing a company executive of illegal drug use and possible exploitation of a teenage intern.

Bradley Nagela, who was global head of options trading-Americas for B2C2 USA of Jersey City, claimed in a suit filed in U.S. District Court for the District of New Jersey that he was engaging in protected behavior when he complained about the conduct of Phillip Gillespie, who was then chairman and co-CEO of London-based B2C2 Ltd. Nagela was terminated four months after he lodged his complaints, the suit said.