Border guards have shot and killed a Palestinian man wielding a knife after he attempted to stab troops at a West Bank checkpoint, Israeli police said.
The Palestinian got out of a taxi close to a military post near the city of Nablus and began running toward officers with a knife, according to police spokeswoman Luba Samri.
The Palestinian health ministry identified the assailant as 51-year-old Samir Seresi.
Another Palestinian died in clashes with Israeli troops in the West Bank, officials said.
Yehya Taha, 21, died in a Ramallah hospital of bullet wounds to the head, said health ministry spokesman Mohammed Awawdeh.
Palestinian media said Mr Taha died following an army raid of the village of Qattana.
Since mid-September, 19 Israelis have died in Palestinian attacks, mostly stabbings and shootings. At least 92 Palestinians have died, including 58 said by Israel to be attackers. The others died in clashes with Israeli forces.
Israel says the unrest stems from incitement by Palestinians. The Palestinians say it is rooted in frustrations over Israel's long occupation. Palestinians accuse Israel of using excessive force in suppressing violence.