Photo from UNIAN

Aseev is a contributor to the Ukrainian Service of Radio Free Europe/Radio Liberty (RFE/RL) and a well-known blogger. He disappeared at the beginning of June 2017 in Donetsk. Reportedly detained by so-called "DPR" forces, his whereabouts were, until recently, unknown. During an OSCE conference in June, the heads of the National Union of Journalists of Ukraine (NUJU) and the Russian Union of Journalists (RUJ) issued a joint statement expressing concern for Aseev, the OSCE said in a press release.

Read alsoSelf-proclaimed Donetsk People's Republic admits arrest of Ukrainian journalist AseyevOn July 27, the RUJ received a letter from the so-called "DPR" stating that Stanislav Aseev is under arrest pending investigation.

"I call on all those responsible to immediately release Stanislav Aseev," Desir said. "Journalists and other media actors must be free to express their views and carry out their work unhindered."