The Israel Defense Forces said “several terrorists” crossed the yellow line that separates the part of Gaza controlled by Israeli troops from the part of Gaza where Israeli troops withdrew from during the ceasefire agreement.

People were identified crossing the yellow line in Khan Younis and in northern Gaza, the IDF said in separate statements. Five people were targeted by Israeli troops in these incidents and at least two people were killed, the IDF said.

-ABC News' Jordana Miller and Ellie Kaufman

Israeli forces chose to carry out the strike in Lebanon that killed Hezbollah chief of staff Haitham Ali Tabataba'I on Sunday as a “contained, opportunity-based elimination,” an Israeli military official said Monday.

Israel “chose to carry out the strike now after identifying a clear window of opportunity to target a key terrorist in the organization,” the official said. “There is no intention to escalate. This is a contained, opportunity-based elimination.”

Israeli forces have been striking targets in southern Lebanon they say are associated with Hezbollah in October and November since the Israel-Hamas ceasefre went into effect. This is the first time Israel has struck Beirut, Lebanon’s capital, since June.

-ABC News' Jordana Miller and Ellie Kaufman

The controversial U.S.- and Israel-backed Gaza Humanitarian Foundation will end its operations, the organization said in a statement to journalists Monday.

GHF began operating in May 2025 after Israel lifted an 11-week total humanitarian aid blockade on Gaza.

GHF has not been operating since the start of the ceasefire, but the organization officially announced it would be closing its operations on Monday.

“With the end of its operations, GHF leadership states that the organization will remain on standby to resume operations should new humanitarian needs arise, and will not be dissolved as a registered NGO,” GHF said.

GHF had four operational sites inside Gaza throughout the course of its operations. These sites and GHF’s operations were heavily criticized by international aid organizations. Instances of people dying trying to get aid at these sites were also reported.

-ABC News' Jordana Miller and Ellie Kaufman

The Israel Defense Forces said in a post to social media on Monday that its warplanes attacked three fighters it alleged crossed the yellow line in the southern Gaza Strip at which Israeli forces are now positioned.

The three individuals "approached IDF forces operating in the area in a manner that posed an immediate threat to them," the IDF said.

"After the identification, the air force, under the direction of the forces in the field, attacked the three terrorists in order to eliminate the threat," the IDF wrote. "Hits were identified."