President Biden called for Russia to free Wall Street Journal reporter Evan Gershkovich, an American citizen who has been accused of spying on behalf of the U.S. government.

“Let him go,” Biden told reporters when asked about Gershkovich’s arrest.

Russian state news agency TASS has reported that Gershkovich was ordered to be held in custody until May 29. He is spending his third day in Russian captivity.

Asked about @WSJ reporter Evan Gershkovich, an accredited American reporter, who was arrested in Russia on espionage charges, President Biden said, "Let him go" and added there is a process. pic.twitter.com/rdT4376D4Y

— Kelly O'Donnell (@KellyO) March 31, 2023

Russia’s main security service, the FSB, claimed Thursday that Evan Gershkovich, a correspondent based in Moscow, had been trying to obtain state secrets.

The Wall Street Journal rejected those allegations, saying in a statement that it “vehemently denies the allegations from the FSB and seeks the immediate release of our trusted and dedicated reporter.”

A Russian district court in Moscow said Thursday that Gershkovich would be detained until May 29.

It is the first time an American journalist has been detained on accusations by Moscow of spying since the Cold War.

It comes a week after US authorities announced charges against a Russian national, Sergey Vladimirovich Cherkasov, accusing him of being a Russian spy.