Hamas has begun to resurface in areas where Israel withdrew the bulk of its forces a month ago, deploying police officers and making salary payments to some of its civil servants in Gaza City in recent days, four residents and a senior official in the militant group said Saturday.

Signs of a Hamas resurgence in Gaza’s largest city underscore the group’s resilience despite Israel’s deadly air and ground campaign in the four months since the deadly Oct. 7 attack on Israel that triggered the war. Israel says it’s determined to crush Hamas and prevent it from returning to power in Gaza, an enclave it has ruled since 2007.