United Nations Secretary-General Antonio Guterres is deeply concerned about developments in Jenin.
A spokesperson said Israeli forces hit the West Bank city with drone strikes in one of the largest operations in the area in 20 years.
Guterres "affirms that all military operations must be conducted with full respect for international humanitarian law," Deputy UN spokesperson Farhan Haq said in a statement.
It follows the UAE's strong condemnation of the attacks.
Race to reach trapped survivors offers hope in Colombia quake zone
Rescuers raced in Colombia on Friday to free four people from a collapsed hotel, a rare sign of hope nearly four days after one of the strongest earthquakes to hit the Andean nation in decades left hundreds dead or missing.
France's top court blocks social media ban for under-15s
France's top court on Friday blocked a bill banning social media access for under-15s, saying it infringed upon freedom of expression and delivering a setback for President Emmanuel Macron, who asked his government to rewrite the legislation.
Japan's record rains strand thousands at Narita airport; kill eight
Record rainfall in Japan stranded thousands of travellers at Tokyo's Narita airport on Friday, bringing floods to the surrounding area that disrupted transport, knocked out power to 20,000 homes and killed eight.
Wildfires in Britain hit record levels after homes burn in intense heat
Wildfires in England and Wales have hit a record level, fire chiefs said on Friday, warning that rescue services were battling to keep up with rising risks a day after fires raced from tinder-dry fields to engulf houses on the hottest day of the year.
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