The Lebanese Hezbollah group says it has launched more than 200 rockets at several military bases in Israel in retaliation over a strike that killed one of its senior commanders.

The attack by the Iran-backed militant group on Thursday was one of the largest in the months-long conflict along the Lebanon-Israel border, with tensions boiling in recent weeks.

The Israeli military did not immediately comment on the attack. It acknowledged on Wednesday that it had killed Mohammad Naameh Nasser, who headed one of Hezbollah’s three regional divisions in southern Lebanon, a day earlier.

Hours later, Hezbollah launched scores of Katyusha rockets and Falaq rockets with heavy warheads into northern Israel and the occupied Syrian Golan Heights. It launched more rockets on Thursday.

The US and France are continuing to scramble to prevent the skirmishes from spiralling into an all-out war, which they fear could spill over across the Arab world.