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."
US special forces rescued a downed airman in Iran in a complex operation that averted a potential crisis for President Donald Trump, as the war entered its sixth week with little sign of progress in diplomatic efforts for a resolution.
An Israeli airstrike on Kfarhata, a village in south Lebanon, killed seven people on Sunday, including a 4-year-old child, while another attack on the Jnah neighbourhood in Beirut killed four people and injured 39 others, Lebanon's health ministry said in a statement.
Iranian drone attacks hit various targets in Kuwait on Sunday, with state energy company Kuwait Petroleum Corporation (KPC) reporting fires and "severe material damage" at some operating units.
Bahrain's Gulf Petrochemical Industries Company said a fire at its operating units after an Iranian drone attack was brought under control, the state news agency reported on Sunday.
Oman and Iran have held talks at the deputy foreign minister level to discuss options for ensuring the smooth transit of vessels through the Strait of Hormuz, Oman's Foreign Ministry wrote on X on Sunday.
Under the directives of His Highness Sheikh Mohammed bin Rashid Al Maktoum, Vice President and Prime Minister of the UAE and the Ruler of Dubai, Dubai Humanitarian has sent 96 tonnes of medical aid to Afghanistan.