The Foreign Press Association, which represents international media working in Israel and the occupied Palestinian territory, says it is “outraged and in shock” after an Israeli army attack killed five journalists and at least 15 others at Nasser Medical Complex, Al Jazeera reports.

In a statement, the group demanded “an immediate explanation” from the Israeli army and the Israeli PM’s office.

“We call on Israel once and for all to halt its abhorrent practice of targeting journalists,” it added. “This must be a watershed moment. We appeal to international leaders: Do everything you can to protect our colleagues. We cannot do it ourselves.”