June 10 (Reuters) - The city of Novokuibyshevsk in Russia's Samara region was under drone attack in the early hours of Wednesday, regional governor Vyacheslav Fedorishchev said on Telegram.

Russian state oil company Rosneft ROSN.MM runs the Novokuibyshevsk oil refinery in the area. Fedorishchev said air space in Samara was closed, without providing details.