Israeli spying devices that were planted during the 2006 war with Hezbollah have been discovered in southern Lebanon, the UN has said.
UN peacekeepers discovered the buried devices when they were blown up by remote control by Israel on Sunday.
Lebanese Prime Minister Fouad Siniora accused Israel of blatantly violating the UN Security Council resolution that led to the end of fighting.
Israel has declined to comment directly on the matter.
Mr Siniora said an Israeli plane flying above peacekeepers and Lebanese troops investigating the blasts constituted further violation of the resolution.
The incident comes at a time of increased tension between the Lebanese authorities and Israel.