Israeli forces hit the city of Jenin with drone strikes during an overnight operation on Monday that left at least seven people dead.
The Palestinian health ministry confirmed at least seven people had been killed and 27 wounded in Jenin, while another man was killed in the city of Ramallah after being shot in the head at a checkpoint.
As daylight broke on Monday, thick black smoke from burning tyres set alight by residents swirled through the Jenin streets while calls to support the fighters rang out from loudspeakers.
A spokesman for Palestinian President Mahmoud Abbas called the operation "a new war crime against our defenceless people".
The Israeli military said the targeted building functioned as an "advanced observation and reconnaissance centre" and a weapons and explosives site as well as a coordination and communications hub.
It provided an aerial photograph showing what it said was the target and which indicated the building hit was near two schools and a medical centre.
A spokesman said it would last as long as needed and officials suggested forces could remain for days. "An operation doesn't end in one day," Energy Minister Israel Katz, a member of the security cabinet, told Army radio.
Israeli Defence Minister Yoav Gallant said his forces were "closely monitoring the conduct of our enemies...The defence establishment is ready for all scenarios."
Washington's ambassador to Israel said he did not think an independent Palestinian state remains a U.S. foreign policy goal, prompting the State Department to say he spoke for himself while the White House referred to past comments from President Donald Trump expressing doubts about a two-state solution.
Los Angeles Mayor Karen Bass on Tuesday issued a curfew for the city’s downtown following several days of intense protests against ICE raids that saw clashes between demonstrators and law enforcement, widespread vandalism and some looting, particularly during the late night and early morning hours.
US Defence Secretary Pete Hegseth on Tuesday defended a $134-million deployment of Marines and National Guard to Los Angeles, saying they would safeguard officers from US Immigration and Customs Enforcement, whose roundups of alleged immigration offenders have triggered days of clashes.
Britain and other allies imposed sanctions on two far-right Israeli ministers, Itamar Ben-Gvir and Bezalel Smotrich, on Tuesday over "their repeated incitements of violence against Palestinian communities", the UK's foreign ministry said.
A former pupil killed 10 people and himself at a secondary school in Austria's second city, Graz, on Tuesday in the worst school shooting in the country's modern history.