Chyihoz is being persecuted for participating in rallies on Feb. 26, 2014 against the separatist policy of the Crimean authorities.
The court hearing was attended by prosecutor of the occupying authorities of Crimea Natalia Poklonskaya.
"Ahtem Chyihoz is charged with the crime under Art. 212 p. 1 of the Criminal Code of the Russian Federation ("organizing mass disorders"), which provides for imprisonment of up to 10 years," she told reporters.
In addition, according to Poklonskaya, Chyihoz is charged with the death of the two people killed in the demonstrations.
"Ahtem Chyihoz is accused of a serious crime. This is Art. 212 of the Criminal Code of the Russian Federation. And, as a consequence of this crime, there are two victims - two deaths as well as victims with varying degrees of injuries," she said.
Censor.NET reported earlier that Chyihoz was arrested on Jan. 29. He was charged with participation in illegal rallies and "calls to Crimean Tatar people to disobey the lawful demands of the authorities, and the use of violence."
Since the events occurred before the annexation of Crimea by Russia, it is not clear which "legitimate demands of the authorities" are in question. Chyihoz is also charged with use of violence against Self-defense of Crimea and representatives of the Russian Unity.