Kyiv Court of Appeals has upheld the arrest of head of Azov-Crimea Civil Corps Stanislav Krasnov who is suspected of treason and terrorism.

The presiding judge announced this decision at a court sitting on Tuesday, an Interfax-Ukraine correspondent reported.

In protest against this ruling, Krasnov announced that will go on a hunger strike.

In turn, Krasnov's defense lawyer Leonid Syvakov said that they will appeal against the court ruling.

"We will file a cassation appeal... despite the fact that the court has said today that this decision is not subject to appeal, we will appeal against it," he said.

As reported, on February 28, the SBU detained Krasnov and his girlfriend, activist Oksana Shelest, in Kyiv region. The Azov-Crimea chief was placed in custody for 72 hours. He was charged with illegal possession of weapons.

The SBU said Krasnov had been collaborating with Russia since 2014 and that he handed over to his Russian supervisor lists of members of the Ukrainian Interior Ministry's Azov regiment. In addition, the SBU said that it found a cache of weapons in Kyiv region, presumably placed there by Krasnov.

Meanwhile the activist's defense team said that security services officers beat Krasnov up. During the court sessions to elect a preventive measure for him, the activist was hospitalized at a request of doctors, who said he was suffering from a hypertensive crisis, concussion and closed head injury.

On March 2 Krasnov was released from prison because the 72-hour detention period expired.

On March 3, the SBU said that Krasnov is suspected of involvement in terrorism and treason.

In late March, Shevchenkivsky District Court of Kyiv changed the conditions of pre-trial confinement for Krasnov from house arrest to custody.