Lebanese militant group Hezbollah says it has flown an unmanned spy plane over northern Israel - the second such flight since last November.
Israeli officials confirmed the latest incident, saying a pilotless drone was seen over the western Galilee region before returning to Lebanese airspace.
Hezbollah says the flights are to retaliate for repeated violations of Lebanese airspace by Israel.
Afterwards, Israeli jets flew at low altitude over southern Lebanon.
Hezbollah said it was a Mersad 1 aircraft which "carried out a reconnaissance mission in the skies of occupied northern Palestine, flying over several Zionist colonies".
Witnesses in Lebanon said that just after Hezbollah's statement, Israeli jet fighters overflew the port city of Tyre and a nearby Palestinian refugee camp, causing sonic booms.
On Friday, Hezbollah signalled in an interview with a UK newspaper that it might be ready to disarm in line with UN Resolution 1559 if Israel withdrew from a disputed strip of land near the Lebanese border.