US journalist Evan Gershkovich appeals against extension of detention in Russia

Wall Street Journal reporter Evan Gershkovich stands in a glass cage in a courtroom at the Moscow City Court, in Moscow, Russia, on April 18, 2023 (Alexander Zemlianichenko/AP/PA)

Wall Street Journal reporter Evan Gershkovich has appealed against a three-month extension of his detention on espionage charges, a Russian court data website indicated on Friday.

Mr Gershkovich, 31, a US citizen, was arrested in March while on a reporting trip to Russia.