Satellite images appear to show extensive damage and several destroyed Russian warplanes at a Crimea airbase following explosions earlier this week.
The Saky base in the west of Russian-ruled Crimea was rocked by a string of blasts on Tuesday, killing one person.
Ukraine has not claimed responsibility – but this new evidence suggests the possibility of a targeted attack.
The images, from the US-based Planet Labs, show large areas of scorched earth left from fires that erupted.
The base’s main runways seem to be intact, but at least eight aircraft appear to be damaged and destroyed, with several craters clearly visible.
Most of them are in a specific area of the base where a large number of planes were parked out in the open – away from the cover of hangars.