Three Palestinian men have been killed by Israeli forces in two separate incidents in the occupied West Bank, Palestinian officials say.
Two brothers in their twenties were allegedly killed in clashes with Israeli troops near Ramallah.
The Israeli military claimed that during an operation, suspects threw petrol bombs at troops, who responded by firing back.
The third man was killed when two Israeli army jeeps on patrol near Hebron broke down.
According to the military, its forces were shot at and improvised explosive devices were thrown at them.
Almost every night, Israel conducts search-and-arrest raids in the West Bank, where at least 140 Palestinians have been killed this year, the vast majority by Israeli fire.
More than 30 Israelis have also been killed amid a spate of gun and knife attacks by Palestinians.
Jawad Rimawi, 22, and Thafer Rimawi, 21, both Birzeit University students, were killed on Tuesday about 16 kilometers (10 miles) north-west of Ramallah.
According to Palestinian sources, the brothers went to see a relative in the village of Beit Rima while Israeli forces were conducting an operation in the area.
As the forces withdrew, clashes erupted with dozens of young Palestinians, who threw stones and petrol bombs at them, according to the sources.
According to the Palestinian health ministry, the brothers were shot and taken to a nearby hospital, where they died.
The Israel Defense Forces (IDF) said that a “riot was instigated by a number of suspects” during a “routine” overnight activity.
“The suspects hurled rocks and Molotov cocktails toward the soldiers, who responded with riot dispersal means and live fire,” it added.
Earlier, Mufeed Ikhlil, 44, was shot in the head by Israeli troops during clashes with stone-throwing Palestinians in Beit Ummar, about 10 kilometers north of Hebron, according to the Palestinian health ministry. He died in the hospital.
According to the ministry, nine more Palestinians were shot.
The IDF stated that two army jeeps became stuck in Beit Ummar due to “technical malfunctions” during a patrol.
The troops in the vehicles were attacked by Palestinian “rioters” who “hurled rocks and improvised explosive devices at the soldiers,” according to the report.
The three killings were described as a “ugly crime” by West Bank Palestinian Authority Prime Minister Mohammed Shtayyeh, while President Mahmoud Abbas’ spokesman warned that “the daily killing of Palestinians is a declaration of war.”
Israel’s “escalation of its crimes and terrorism will be met with an escalation of resistance,” according to a spokesman for the militant group Hamas, which controls the Gaza Strip.
On Tuesday, a 20-year-old woman was seriously injured after being hit by a car near the settlement of Kochav Yaakov in what the IDF described as a suspected ramming attack.
The driver, identified by Israeli media as a 45-year-old Palestinian man, was shot by police after a chase.
It comes just five days after a 15-year-old Israeli-Canadian boy and a 50-year-old Israeli man were killed in coordinated bomb attacks at bus stops on the outskirts of Jerusalem. Thirteen more people were injured.
So far, no group has claimed it was behind the twin bombings, which were praised by Palestinian militants.
On Monday, the UN Special Co-ordinator for the Middle East Peace Process, Tor Wennesland, warned that the conflict was “again reaching a boiling point”.