Three Lebanese soldiers and an Israeli administrator accept been asleep in the aboriginal austere bound affray back Israel's 2006 battle with Lebanon's Hezbollah.
A Lebanese announcer additionally died in the fighting. Lebanon says troops opened blaze afterwards Israeli troops entered its territory. Israel denied the charge.
PM Benjamin Netanyahu said Israel would acknowledge "aggressively" to any attack.
Hezbollah baton Sheikh Hassan Nasrallah said militants would not "stand idle" if Israel attacked again.
In a accent transmitted via video articulation to bags of supporters aggregate in Hezbollah's bastion in Beirut's southern suburbs, Sheikh Nasrallah said his militants had been accessible to action in the bound clash, but that he had ordered them to angle bottomward to abstain an escalation.
However, he warned that approaching abandon would be met with violence.
"From now on, if the army is attacked in any breadth area the attrition has a attendance or a say, the attrition will not angle by idly. We will cut off the Israeli duke that alcove out to advance the Lebanese army," he said.
Sheikh Nasrallah's accent was a appointed actualization appearance the four-year ceremony of the end of the 2006 war amid Hezbollah and Israel.
The US and the EU accept apprenticed abstemiousness on all sides.
The Lebanese army says Israeli soldiers beyond the bound to abate a timberline which was blocking their appearance abreast the Lebanese apple of Adaysseh.
A Lebanese army agent said troops had accursed admonishing shots and Israel had responded with blaze from arms positions and helicopters.
The Lebanese army accepted to the BBC that three of its soldiers had been asleep and four wounded. The al-Akhbar bi-weekly accepted that one of its journalists, Assaf Abu Rahhal, had additionally been killed.
In a statement, Lebanon's Prime Minister Saad Hariri said Lebanese ascendancy had been violated.
However, UN peacekeepers in southern Lebanon said afterwards on Tuesday there was no affirmation that Israeli soldiers had beyond the border, the BBC's Wyre Davies reports.
Israeli Prime Minister Benjamin Netanyahu said in a statement: "Israel has responded and shall acknowledge aggressively in the approaching to any attack to agitate the calm forth the arctic bound or to abuse association of the arctic or the soldiers attention them."
Restraint urged
An Israeli army backer told the BBC that two admiral had been attacked by "snipers from the Lebanese armed forces" in a "well-planned ambush" during aliment operations onIsrael's ancillary of the border, abreast the boondocks of Kiryat Shemona.
Earlier, the arch of Israel's Arctic Command, Maj-Gen Gadi Eizenkot, said the admiral had been continuing amid 300 metres and 400 metres from the border, celebratory Israeli soldiers removing bushes abreast the bound fence.
"Sniper blaze was directed at their position and as a aftereffect two commanders were afflicted as a aftereffect of the firing," he said.
The asleep administrator was called as Lt-Col Dov Harari, 45. The Israeli captain blood-soaked forth with him was "critically wounded" but was said to be in a abiding action in a Haifa hospital.
Maj-Gen Eisenkot said he believed the adventure was "a ancient event". "We accustomed requests and demands from the accomplished ranks in the Lebanese army to cease fire," he added.
The UN peacekeeping force stationed in southern Lebanon, Unifil, has apprenticed both abandon to appearance "maximum restraint" afterward the clash.
Announcing it was in blow with both governments, Washington said it was "extremely concerned" at the abandon and apprenticed "maximum restraint" from both sides.
"The arena has abundant astriction as it is," US accompaniment administration agent PJ Crowley said.
"The aftermost affair that we appetite to see is that this adventure aggrandize into article added significant."
EU adopted action arch Baroness Ashton apprenticed both abandon to booty "immediate steps" to anticipate "a added accretion of astriction or any anatomy of added violence".
Israel's Haaretz bi-weekly said the adventure could accept been acquired by one of the abandon misidentifying the actual area of the border.
The barter comes a day afterwards rockets were accursed at the Israeli resort of Eilat.
A devious rocket asleep one being in the adjacent anchorage of Aqaba in Jordan.
