Wall Street Journal reporter Evan Gershkovich has had a recent attraction in opposition to his pre-trial detention on expenses of espionage rejected by a Moscow courtroom.

The US reporter denies the spying allegations, which may result in a jail sentence of as much as 20 years if he's convicted.

The 32-year-old appeared in courtroom sporting blue denims and a black T-shirt.

His mother and father Mikhail Gershkovich and Ella Milman, who left the Soviet Union for the United States in 1979, had been current to help their son.

He was arrested in March and formally charged with spying in Russia in April, and has been held on the infamous Lefortovo jail in Moscow since.

Today's court ruling upholds an earlier judgment by a Russian courtroom to detain him till late August.

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His legal professionals had referred to as for him to be granted bail or positioned below home arrest with situations.

He is accused by Russia's FSB safety service of gathering navy secrets and techniques within the Urals metropolis of Yekaterinburg.

His newspaper vehemently denies the accusation in opposition to the reporter, who was accredited by the Russian Foreign Ministry.

The US authorities has declared him to be wrongfully detained and has demanded his instant launch.