He announced it to Ukrainski Novyny in Facebook, Censor.NET reports.
"Yesterday, it was the third time they had tried to arrest me. I avoided it, but due to the arbitrariness of young investigators I experienced a hypertensive crisis. I'm in the hospital," he said.
According to him, doctors are trying to remove the symptoms, with a treatment to follow.
As reported, Korniiets previously filed a claim to the Court of Appeal of Kyiv with regard to the decision of a lower court, remanding him on bail of UAH 3.045 mln (about $134,679).
Related materials: 'Diamond prosecutors' case