Gershkovich, 32, held Russian Foreign Ministry accreditation to work as a reporter in Russia, but Foreign Ministry spokeswoman Maria Zakharova swiftly condemned the reporter just hours after his arrest, claiming without evidence that his activities were “not related to journalism.”

Since his arrest the Russian authorities have not presented any further evidence to substantiate their allegations.

Evan Gershkovich adored life in Russia. Now, the reporter waits in prison.

U.S. diplomats in Moscow, who attended Tuesday’s court hearing, expressed deep concern over the decision to extend Gershkovich’s detention and called for his immediate release.

“Today, U.S. Embassy representatives attended the hearing of wrongfully detained WSJ journalist Evan Gershkovich at the Lefortovo Court. We are deeply concerned by the court’s decision to extend his detention for an additional two months,” the embassy said in a statement. “Evan has already been in pretrial detention without legal grounds for almost eight months. We reiterate our call for Evan’s immediate release.”

Russian Foreign Ministry officials have said repeatedly that there would be no negotiations on a prisoner exchange until after a verdict in the case. Russia’s FSB, a successor to the Soviet KGB, has accused the journalist of trying to obtain secret information about a Russian military factory.

A statement Tuesday from the Wall Street Journal again rejected the accusations against Gershkovich and called for his immediate release.

“Evan has now been unjustly imprisoned for nearly 250 days, and every day is a day too long. The accusations against him are categorically false and his continued imprisonment is a brazen and outrageous attack on a free press, which is critical for a free society,” the statement said.

Last month, Russian authorities detained another American journalist, Alsu Kurmasheva, who is a dual U.S.-Russian citizen, accusing her of failing to register as a “foreign agent.” Kurmasheva, an editor based in Prague with Radio Free Europe/Radio Liberty, had been visiting her family in Russia when she was arrested.

Gershkovich has appealed unsuccessfully to be granted bail or to be transferred to house arrest.