The Palestinian militant group accused Israel of failing to honor ceasefire terms. Israel called the move a “complete violation” of the ceasefire, and has put the military on high alert.

Palestinian militant group Hamas announced that it was postponing until further notice the next release of Israeli hostages held in the Gaza Strip, claiming that Israel had failed to abide by the terms of their ceasefire agreement.

Abu Obeida, a spokesman for Hamas’ military wing, claimed that since the ceasefire took effect on January 19, Israel has delayed the return of displaced Palestinians to northern Gaza, targeted Gazans with military shelling and gunfire, and prevented aid from entering the territory.

He added that Hamas would not release any more hostages until Israel “complies and compensates for the past weeks.”

More hostages were due to be released Saturday in exchange for dozens of Palestinian prisoners, but the Hamas spokesman said no more hostages would be released until further notice.

There have been five hostage-prisoner exchanges between Israel and Hamas in the first phase of the current cease-fire. Three hostages were released last Saturday.