The official said Israeli fighter jets targeted a Syrian government convoy carrying surface-to-air missiles bound for the militant group Hezbollah in Lebanon.
Meanwhile, a U.S. official said reports that Israel had struck a Syrian research facility were wrong, instead saying warplanes hit only one target: a convoy carrying surface-to-air missiles.
News agency reports, citing US sources, speak of an arms convoy carrying sophisticated surface-to-air missile systems being attacked near to the Syria-Lebanon border.
But a US official told the BBC the target had been a convoy carrying SA-17 surface-to-air missiles bound for the Shia militant movement Hezbollah in neighbouring Lebanon.
These fluids trapped in the subsurface could have periodically breached the surface in deep basins such as McLaughlin Crater, possibly carrying clues to subsurface habitability.