Israeli forces killed at least 15 people and injured dozens more in the country’s south, Lebanese officials said. Israel had agreed to withdraw its troops from the area as of Sunday.

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.

Israeli troops fired on people trying to return home to southern Lebanon and delayed a return home for northern Gaza residents. Israel blamed Hezbollah and Hamas.

Israeli forces killed at least 22 people and injured dozens more in southern Lebanon on Sunday, Lebanese officials said, in the deadliest day since Israel’s truce with Hezbollah took effect. In Gaza,