Kherson Court of Appeal on Monday ruled to extend until September 8 the measure of restraint for RIA Novosti Ukraine chief Kirill Vyshinsky in the form of arrest.

"The appeal was partially rejected," the Prosecutor's Office of the Autonomous Republic of Crimea told the Interfax-Ukraine news agency, adding that there was originally a court decision to extend the arrest until September 13, but the court decided on extending his arrest until September 8.

Law enforcers arrested Vyshinsky in Kyiv on May 15, 2018. He was notified of a suspicion in a criminal proceeding opened under Part 1, Article 111 (treason) of the Criminal Code of Ukraine.

He was taken to Kherson on May 16. On May 17, the Kherson City Court ruled to arrest Vyshinsky until July 13.

On July 6, spokeswoman for Ukraine's prosecutor general Larysa Sarhan said that Vyshinsky had been informed of the suspicion of illegal possession of weapons and ammunition (Part 1, Article 263 of the Criminal Code of Ukraine).

According to her, a gun and ammunition for it were found and seized during recent searches in an individual bank vault rented by Vyshinsky. The gun is a firearm, a FN Browning M1906 automatic pistol.

On July 11, the Kherson City Court extended Vyshinsky's arrest.