Israel’s defense minister has ordered the military to take additional parts of the Gaza Strip, and vowed to hold them until Hamas releases the remaining hostages it holds.

Israel’s defense minister said it was preparing to seize more territory in Gaza and intensify attacks unless the Palestinian group freed more of the dozens of remaining captives.

Israeli Defence Minister Israel Katz said on Friday the army was intensifying strikes from the air, land and sea in Gaza to pressure Hamas into freeing remaining hostages, and would also evacuate civilians to the south of the enclave.

Hamas fired rockets at Israel from Gaza Thursday, the militant group’s first response to Israel’s renewed offensive in the Strip that shattered the two-month-old ceasefire.

The Israeli military expanded its ground offensive in Gaza, and killed at least 80 Palestinians in a new wave of strikes Thursday. Hamas fired its first rockets since Israel broke a recent ceasefire.

Israel’s military intercepted a missile launched by Yemen’s Houthi rebels early Thursday, the second to target Israel since the collapse of the Gaza ceasefire, as the United States’ intensifies airstrikes against the Iran-backed militant group.