Lawyers representing Dow Jones, publisher of The Wall Street Journal, asked a United Nations free-speech advocate to make an urgent appeal to Russia for the immediate release of Journal reporter Evan Gershkovich, reports Journal reporter Jennifer Calfas.

Calfas writes, “Mr. Gershkovich, the lawyers wrote, is being held as a ‘high-value political prisoner.’

“‘Russia’s continued detention of Evan Gershkovich is a gross violation of his rights under international instruments to which Russia is a party and under Russia’s own domestic law,’ the lawyers wrote. ‘Russia’s arrest of him is an affront to the work of all journalists and the values of openness and free expression at the core of the Special Rapporteur’s mandate.’

“A Moscow court in April upheld Mr. Gershkovich’s detention. Mr. Gershkovich was denied bail and ordered to be held in Lefortovo prison. The facility is often used to house prominent political prisoners, and former prisoners have told the Journal it is engineered to be isolating.”

Read more here.