GAZA CITY, Gaza Strip— Israel unleashed a wave of airstrikes Friday on Gaza, killing at least 10 people, including a senior militant, according to Palestinian officials. Israel said it targeted the Islamic Jihad militant group in response to an “imminent threat” following the recent arrest of another senior militant.

Hours later, Palestinian militants launched a barrage of rockets as air-raid sirens wailed in Israel and the two sides drew closer to another all-out war. Islamic Jihad claimed to have fired 100 rockets.

Israel and Gaza’s militant Hamas rulers have fought four wars and several smaller battles over the last 15 years at a staggering cost to the territory’s 2 million Palestinian residents.

A blast was heard in Gaza City, where smoke poured out of the seventh floor of a tall building. Video released by Israel’s military showed the strikes blowing up three guard towers with suspected militants in them.

In a nationally televised speech, Israeli Prime Minister Yair Lapid said his country launched the attacks based on “concrete threats.” “This government has a zero-tolerance policy for any attempted attacks — of any kind — from Gaza towards Israeli territory,” Lapid said. “Israel will not sit idly by when there are those who are trying to harm its civilians.” He added that “Israel isn’t interested in a broader conflict in Gaza but will not shy away from one either.” The violence poses an early test for Lapid, who assumed the role of caretaker prime minister ahead of elections in November, when he hopes to keep the position. He has experience in diplomacy, having served as foreign minister in the outgoing government, but his security credentials are thin.

Hamas also faces a dilemma in deciding whether to join a new battle barely a year after the last war caused widespread devastation. There has been almost no reconstruction since then, and the isolated coastal territory is mired in poverty, with unemployment hovering around 50 percent.

The Palestinian Health Ministry said a 5-year-old girl and a 23-year-old woman were among those killed in Gaza, without differentiating between civilian and militant casualties. The Israeli military said early estimates were that around 15 fighters were killed. Dozens of people were wounded.

Islamic Jihad said Taiseer al-Jabari, its commander for northern Gaza, was among the dead. He had succeeded another militant killed in an airstrike in 2019. (AP)