DEIR AL-BALAH, Gaza Strip — Israeli strikes in Gaza on Thursday killed nine people, including three women, a day after the U.S. announced that the fragile ceasefire would advance to its second phase.

Israeli Prime Minister Benjamin Netanyahu called the ceasefire announcement largely symbolic, raising questions about how its more challenging elements will be carried out.

Speaking with the parents of the last Israeli hostage whose remains are still in Gaza, Netanyahu late Wednesday said the governing committee of Palestinians announced as part of the second phase was merely a “declarative move,” rather than the sign of progress described by U.S. envoy Steve Witkoff.

Israeli police officer Ran Gvili’s parents had earlier pressed Netanyahu not to advance the ceasefire until their son’s remains were returned, Israel’s Hostage and Missing Families Forum said Wednesday.

Netanyahu told Gvili’s parents that his return remained a top priority.

The announcement of the ceasefire’s second phase marked a significant step forward but left many questions unanswered.

Those include the makeup of the proposed, apolitical governing committee of Palestinian experts and an international “Board of Peace.”

The committee’s composition was coordinated with Israel, said an Israeli official speaking on the condition of anonymity.

Questions also include the timing of deployment of international forces and the reopening of Gaza’s southern Rafah border crossing, as well as concrete details about disarming Hamas and rebuilding Gaza.

In an interview on Wednesday with the West Bank-based Radio Basma, Ali Shaath, the engineer and former Palestinian Authority official slated to head the committee, said he anticipated reconstruction and recovery to take roughly three years. He said it would start with immediate needs like shelter.

“If I bring bulldozers, and push the rubble into the sea, and make new islands (in the sea), new land, it is a win for Gaza and (we) get rid of the rubble,” Shaath, a Gaza native, said.

Nine people were killed Thursday in several strikes, according to local hospitals. The first strike killed two men, while three women and a man were killed in the second strike, according to Al-Aqsa Martyrs Hospital. Later, two people were killed and five injured when a strike hit a house, according to Al-Awda Hospital in Nuseirat. In addition, one person was killed in Gaza City, Shifa Hospital said.