Sirens sounded across central Israel, including in Tel Aviv, for the first time in months on Sunday, as Hamas claimed to have fired a barrage of rockets from Gaza.
The militants have continued to fire projectiles at communities around Gaza more than seven months into the war but have not fired longer-range rockets in months.
There were no immediate reports of casualties or damage from the latest barrage.
Earlier on Sunday, aid trucks entered Gaza from southern Israel through a new agreement to bypass the Rafah crossing with Egypt after Israeli forces seized the Palestinian side of it earlier this month. But was unclear if humanitarian groups would be able to access the aid because of ongoing fighting in the area.
Egypt refuses to reopen its side of the Rafah crossing until control of the Gaza side is handed back to Palestinians. It agreed to temporarily divert traffic through Israel's Kerem Shalom crossing, Gaza's main cargo terminal, after a call between U.S. President Joe Biden and Egyptian President Abdel-Fattah el-Sissi.
But that crossing has been largely inaccessible because of fighting linked to Israel's offensive in the nearby city of Rafah. Israel says it has allowed hundreds of trucks to enter, but United Nations agencies say it is usually too dangerous to retrieve the aid on the other side.
The war between Israel and Hamas, now in its eighth month, has killed nearly 36,000 Palestinians, according to local health officials. Around 80% of the population's 2.3 million people have fled their homes, severe hunger is widespread and UN officials say parts of the territory are experiencing famine.
Hamas triggered the war with its Oct. 7 attack into Israel, in which Palestinian militants killed some 1,200 people, mostly civilians, and seized some 250 hostages.
Hamas is still holding some 100 hostages and the remains of around 30 others after most of the rest were released during a ceasefire last year.
