Plumes of black smoke were seen on Tuesday at a Russian military airbase near the settlement of Gvardeyskoye in the centre of Russian-controlled Crimea, Russia's Kommersant newspaper reported.
Earlier on Tuesday, Russia's Defence Ministry separately blamed a series of explosions around Dzhankoi in northern Crimea on "sabotage", state-owned news agency RIA reported.
Ukraine has neither confirmed nor denied its involvement in a recent series of blasts in Crimea, which Russia annexed in 2014.
(Reporting by Reuters; Editing by Alison Williams)
