The UN peacekeeping mission in Lebanon, known as UNIFIL, said in a statement that its headquarters and positions “have been repeatedly hit” by Israeli forces.

It said an Israeli tank “directly” fired on an observation tower at the force’s headquarters in the town of Naqoura, Lebanon, and that soldiers had attacked a bunker near where peacekeepers were sheltering, damaging vehicles and a communication system. It said an Israeli drone was seen flying to the bunker’s entrance. The two UNIFIL troops wounded in the attacks and hospitalized are Indonesian, Italy’s Foreign Minister Antonio Tajani said. The Israeli military acknowledged opening fire at a UN base in southern Lebanon on Thursday and said it had ordered the peacekeepers to “remain in protected spaces.”

Later Thursday, the UN peacekeeping chief said 300 peacekeepers in frontline positions on southern Lebanon’s border have been temporarily moved to larger bases, and plans to move another 200 will depend on security conditions as the conflict escalates. Jean-Pierre Lacroix told an emergency meeting of the U.N. Security Council that peacekeepers with UNIFIL are staying in their positions, but because of air and ground attacks they cannot conduct patrols.

UNIFIL, which has more than 10,000 peacekeepers from dozens of countries, was created to oversee the withdrawal of Israeli troops from southern Lebanon after Israel’s 1978 invasion. The United Nations expanded its mission following the 2006 war between Israel and Hezbollah, allowing peacekeepers to patrol a buffer zone set up along the border.

Israel accuses Hezbollah of establishing militant infrastructure along the border in violation of the UN Security Council resolution that ended the 2006 war.  The European Union’s top diplomat, Josep Borrell, sharply condemned Israeli strikes that hit UNIFIL positions as “an inadmissible act, for which there is no justification.”