Head of the Ukrainian Cultural Center Leonid Kuzmin informed this on his Facbook page.
"Andriy Vynohradov has been released! He is already at home. No criminal proceedings were opened!" Kuzmin wrote.
Earlier, he said that the wife of Andriy Vynohradov had been also released.
As a reminder, this morning the Russian Federal Security Service (FSB) detained activist of the Ukrainian Cultural Center Andriy Vynohradov and his wife.