Israel-Gaza updates: Death toll in Rafah airstrike rises to 50: Action Aid UK

The bodies of four Israeli hostages recovered last week were found in a tunnel in Jabaliya in northern Gaza, the Israel Defense Forces said Monday.

The bodies of Shani Louk, Amit Buskila, Ron Benjamin and Yitzchak Gelernter -- who were killed during the Oct. 7 Hamas attack and taken into Gaza -- were recovered following a monthslong operation, the IDF said.

Israeli forces also "located intelligence materials and large quantities of weapons" during the night operation, the IDF said.

More than 810,000 people have fled Rafah in the past two weeks amid Israel's ongoing military operation in the southern Gaza city, according to the United Nations Relief and Works Agency for Palestine Refugees (UNRWA).

"Every time families are displaced their lives are at serious risk. People are forced to leave everything behind looking for safety. But, there's no safe zone," UNRWA said on X Monday.

Congress is considering sanctioning the International Criminal Court regarding the arrest warrants for Prime Minister Benjamin Netanyahu and Defense Minister Yoav Gallant, according to House Speaker Mike Johnson.

“In the absence of leadership from the White House, Congress is reviewing all options, including sanctions, to punish the ICC and ensure its leadership faces consequences if they proceed," Johnson said in a statement. "If the ICC is allowed to threaten Israeli leaders, ours could be next."

The ICC has "no authority" over Israel or the U.S., Johnson noted.

-ABC News' Lauren Peller

President Joe Biden called the application for arrest warrants from the International Criminal Court against Israeli Prime Minister Benjamin Netanyahu and other Israeli leaders "outrageous."

"And let me be clear: whatever this prosecutor might imply, there is no equivalence -- none -- between Israel and Hamas," Biden said.

"We will always stand with Israel against threats to its security," Biden's statement said.

The U.S. and Israel are not parties in the ICC.