Initial findings by an internal UN inquiry had suggested Israel was behind the attack, a Western military source had ‌told Reuters on Tuesday.

The UN peacekeeping mission known as UNIFIL is stationed in southern Lebanon to monitor hostilities along the demarcation line with Israel — an area that is at the heart of clashes between Israeli troops and Iran-backed Hezbollah fighters.

The mission, which will be halted at the end of 2026, has been sporadically caught in the crosshairs of both Israel and Hezbollah over the last couple of years, but ​with Israel considering a broader ground operation, the risks could be greater in the coming weeks.

In a statement to Reuters, Israel’s military acknowledged its troops were ​behind the incident, but said they had responded to anti-tank missile fire from Hezbollah, which had moderately wounded two of its soldiers.

“A ⁠comprehensive investigation concluded in recent days determined that the fire that hit the UNIFIL personnel was mistakenly carried out by the IDF troops that misidentified the UNIFIL troops as ​the source of the anti-tank fire moments earlier,” it said.

“The IDF regrets the incident and has conveyed its apologies through the appropriate channels to Ghana and the United Nations. ​The findings of the investigations have been disseminated within the IDF to prevent recurrence of similar incidents.”

Shells fired from Israeli tank

According to the Western source, the preliminary conclusions led by UNIFIL’s Force Commander Reserve, with support from explosive ordnance disposal specialists, indicated that three strikes ​at the Al Qawzah base were direct hits from the main gun of an Israeli battle tank.

They were fired using 120-mm M339 HE-MP-T shells, the source said.

“Israeli involvement in the ​attack against UNIFIL is undeniable, given that these munitions are manufactured by Israel Military Industries (IMI),” the source said.

The findings of UNIFIL’s probe have not been previously reported. UNIFIL had said on March ‌6 that Ghanaian ⁠peacekeepers were wounded amid heavy firing and called the incident “unacceptable,” but did not say at the time who was responsible.

“That investigation is not yet complete. Once it is finalised, it will be shared with the parties, per usual practice,” said UNIFIL spokesperson Kandice Ardiel.

“Nonetheless, we reiterate the obligation of all actors to ensure the safety and security of peacekeepers and avoid harm to civilians. Any deliberate attack on peacekeepers is a grave violation of international humanitarian law and a violation of resolution 1701.”

The Lebanese prime minister’s office did not ​immediately respond to a request for comment.

Highlighting ​the concerns surrounding UN peacekeepers, UNIFIL said ⁠on Sunday that another group of peacekeepers were likely fired upon earlier that day on three separate occasions in southern Lebanon, “likely by non-state armed groups.” It said no peacekeepers were injured.

UNIFIL’s ability to carry out mission tested

The M339 HE-MP-T round can be used in anti-personnel, anti-helicopter, anti-materiel, ​anti-armour and anti-structure roles.

The shots were fired within a five-minute window, indicating repeated fire rather than a single stray round, the ​source said, adding that ⁠the base’s location and coordinates were well known to all parties operating in the area, raising serious concerns over the safety of UN personnel.

Three Ghanaian soldiers were wounded, according to the Ghanaian army.

“This escalation, far from being isolated, is part of a worrying dynamic, severely testing UNIFIL’s ability to carry out its peacekeeping mission,” the source said.

The Israeli military occupies five posts within ⁠Lebanon, and ​despite a ceasefire last year had frequently carried out air strikes in the country’s south that it says are ​targeting Iran-backed militant group Hezbollah.

UN Security Council Resolution 1701, among other provisions, states that no armed forces should be operating in southern Lebanon except the UN peacekeepers and the Lebanese military.

Israel has repeatedly accused Hezbollah of ​trying to rearm and the Lebanese armed forces of failing to disarm the group.