In a news release issued on Tuesday, the US Department of Justice identified the man as Hector Alejandro Cabrera Fuentes, a Mexican citizen residing in Singapore. The statement said that Fuentes was arrested on Monday and was charged with “conspiracy” and “acting within the United States on behalf of a foreign government”.

According to the statement, Fuentes was recruited in April of 2019 by an unnamed Russian government official. His first assignment was to rent an apartment in Miami-Dade County using fake identification. One he carried out the assignment, Fuentes allegedly traveled to Russia, where he briefed his handler. He was then asked to return to Miami and drive to an apartment complex, where he was to observe a vehicle belonging to an individual that the Department of Justice statement describes as a “US government source”. Fuentes was tasked with providing his Russian handler with the vehicle’s license plate number.

Having been given a detailed physical description of the vehicle by his Russian handler, Fuentes drove to the apartment complex in Miami, but was stopped at the entrance to the complex by a security guard. While Fuentes was speaking with the security guard, Fuentes’ wife allegedly exited the car and took a photograph of the vehicle in question. According to the FBI, she later shared the photograph with Fuentes’ Russian handler on the mobile phone application WhatsApp. The photograph was discovered by US Customs and Border Protection agents on the smartphone of Fuentes’ wife on Sunday, as the pair tried to board a flight to Mexico City.

The US Department of Justice news release does not identify Fuentes’ alleged espionage target. But an article in The Miami Herald claims that the target is an FBI informant who has provided the Bureau’s counterintelligence division with critical information about Russian espionage operations in the Miami area. Fuentes is scheduled to appear in court for a pretrial detention hearing this coming Friday. His arraignment has been scheduled for March 3. The press release does not explain why Fuentes’ wife was not arrested.