Royal Air Force Typhoons based in Scotland have been scrambled after "unidentified aircraft" were tracked flying towards UK airspace.
The fighter jets, part of the Quick Reaction Alert team at RAF Lossiemouth, were launched but "no intercept took place", according to an RAF spokesperson.
Reports have suggested the unidentified aircraft was a Russian bomber that was spotted off the coast of Shetland.
The Royal Air Force spokesperson said: "RAF Quick Reaction Alert Typhoon fighter aircraft were launched today from RAF Lossiemouth after unidentified aircraft were tracked flying towards UK airspace, however, the aircraft remained outside of our area of interest and no intercept took place."
RAF Lossiemouth in Moray, north-east Scotland, is one of the UK's two Quick Reaction Alert bases.
Crew and aircraft are held on immediate readiness and can take off within minutes of being alerted to protect UK airspace.
Cover image: Library photo of a Typhoon fighter jet (Picture: MOD).