A man killed by Israeli soldiers after a West Bank car ramming on Saturday, the army said, in an escalation that threatens to end a relative lull during the holy month of Ramadan.
Palestinians died less than 24 hours after an Arab Israeli police officer allegedly snatched a gun from a police officer in Jerusalem's al-Aqsa mosque compound and shot it before being shot dead.
The army said a terrorist had carried out a ramming attack adjacent to the town of Beit Ummar with a spokesman confirming the presumed assailant's death.
Magen David Adom medics said three men were taken to hospitals in Jerusalem with serious, moderate and light wounds.
The Palestinian Authority identified the dead man as Mohammed Baradyah, 23.
Earlier on Saturday, police said they shot dead 26-year-old medical student Mohammed al-Asibi, a resident of the Bedouin village of Hura in southern Israel.
According to police, Asibi had snatched a gun from an officer and fired it at other police officers close to the Chain Gate, an access point to the al-Aqsa mosque compound in the Old City of Israeli-annexed east Jerusalem.
Passers-by reported hearing gunfire, and an AFP photographer saw scores of police deployed in the Old City around 1 am.
Asibi's family disputed the police account of his death and demanded to see CCTV footage, Israeli media reported.
The Israeli parliament's Islamist party, Raam, rejected the police account of events and called for an investigation, citing claims from witnesses who said Asibi went to the aid of a woman who was in a scuffle with police.
The umbrella organisation representing Israel's Arab citizens announced a general strike and day of mourning on Sunday following the execution of Asibi.
The police issued a statement on Saturday afternoon saying that the site of the attack was not covered by surveillance cameras.
A video released by police showed what was described as Asibi milling around the compound. Another video showed people at the Chain Gate reacting in fright, presumably due to the sound of gunshots.
The police also rejected the notion that a woman was involved, saying Asibi arrived alone with officers suspicious of his presence at the compound after closing hours.
The shooting occurred a few hours after tens of thousands of Palestinians packed the Al-Aqsa mosque compound for the second Friday prayers of Ramadan, which had passed peacefully despite fears of bloodshed during the holy month.
Since the beginning of the year, an increase in violence in the Israeli-Palestinian conflict has raised fears of bloodshed during Ramadan.
The conflict has claimed the lives of 88 Palestinians, including militants and civilians, and one Arab Israeli since the beginning of the year.
Fourteen other Israelis, including members of the security forces and civilians, and one Ukrainian, have been killed over the same period, according to an AFP tally based on official sources from both sides.