Israeli troops opened fire in south Lebanon on Sunday, killing 22 people including a Lebanese soldier, health officials said, as residents tried to return home on the day Israel was meant to withdraw under a truce deal.

The withdrawal deadline is part of a ceasefire agreement reached two months ago that ended Israel’s war with Iran-backed Hezbollah, which had left the Lebanese militant group weakened.

The parties have swapped blame for the delay in implementing the agreement, and on Friday Israel said it would keep troops across the border in south Lebanon beyond the pull-out date.

Lebanon’s health ministry said on Sunday that Israeli forces opened fire on “citizens who were trying to return to their villages that are still under [Israeli] occupation”.

It said 22 people including six women and a soldier were killed and 124 more wounded. The Lebanese army also announced the soldier’s death and said another had been wounded.