Ukrainian citizen Panov, charged with terrorism in Russia, died in pretrial detention center in Rostov, - Fontanka. PHOTO

Artur Panov, a citizen of Ukraine charged with preparation of a terrorist attack, died in a pretrial facility.

As reported by Censor.NET, this was announced by Russian news outlet Fontanka.

"Yesterday (April 29) Ukrainian citizen Artur Panov, who is charged by Russian authorities with a preparation of a terrorist attack in Russia, died in Rostov pretrial detention center due to cardiac failure," the newspiece reads.

The trial over Panov started on Feb. 14 in Rostov-on-Don, Russia. In the case, Panov was joined by a Rostov student charged with assistance to the Ukrainian's terrorist activities.

The Russian side says Panov was detained in early 2015 in the Rostov region after he crossed Ukraine-Russia border from occupied Luhansk with an alleged purpose of committing a terrorist attack in Russia. The investigation says he had an explosive device with him. They say he was planning a terrorist attack in Gorky theater in Rostov and confirm it by his blog posts of manifests by German leftist group RAF.

As the moment of his detention, Panov was underage (less than 18 years old). During his detention, Panov went on hunger strikes numerous times, which might have led to health deterioration, the medium reported.