Fierce gun battles have broken out during an Israeli army incursion in Nablus in the West Bank.
One Palestinian was killed and 25 others were injured, along with two Israeli soldiers.
And a Palestinian farmer was killed in Gaza in shelling by an Israeli tank parked close to the border.
The clashes in Nablus, which residents said were the fiercest for around six months, broke out during an arrest operation which saw around 20 jeeps pile into the northern city at daybreak before leaving in late morning.
As the troops fanned out across the city, they found themselves under attack first from youths throwing stones and then from Palestinian gunmen.
Doctors at Nablus's main hospital named the dead man as 22-year-old Hossam Saqer. He had been shot in the head by the Israeli soldiers.
The other 25 were wounded by a combination of live fire and rubber-coated bullets, the medics said.
The Israeli military said two of its soldiers were hit by shrapnel from an explosive device launched at them as they attempted to arrest suspects holed up in a building.
