Israel’s military says it won’t complete its withdrawal from southern Lebanon by Sunday as outlined in its ceasefire agreement with Hezbollah militants.

Israel has begun allowing Palestinians to return to the heavily destroyed north of the Gaza Strip for the first time since the early weeks of the 15-month war with Hamas, in accordance with a fragile ceasefire.

Israel and Hamas reached a deal to resolve a disagreement over the exchange of a female civilian hostage that had threatened to derail the truce. Lebanon, however, saw the deadliest day since Israel’s truce with Hezbollah took effect.

The U.S. said on Sunday that the agreement between Lebanon and Israel would remain in effect until Feb. 18, after Israel said on Friday it would keep troops in the south beyond the Sunday deadline set out in a U.

The White House said that a ceasefire involving Israel and Lebanon had been extended in a Sunday statement. The ceasefire between Hezbollah and Israel, announced by former President Biden in November,