An Israeli military spokeswoman said security forces "surveyed the house of the assailant in the village of Khobar, searched for weapons and confiscated money used for terror purposes. The brother of the assailant was also apprehended."
"Movement out of the village will be limited to humanitarian cases only," she said.
Six people died on Friday in the bloodiest spate of Israeli-Palestinian violence for years.
Three Israelis were stabbed to death in a Jewish settlement in the Israeli-occupied West Bank, hours after three Palestinians were killed in violence prompted by Israel's installation of metal detectors at entry points to the Noble Sanctuary-Temple Mount compound in Jerusalem's walled Old City.
Palestinian President Mahmoud Abbas ordered the suspension of all official contact with Israel until it removed the metal detectors at the site, where Muslims pray at al-Aqsa mosque.
He gave no details, but current contacts are largely limited to security cooperation.
The three Israelis stabbed to death and a fourth who was wounded were from the fenced-in West Bank settlement of Neve Tsuf. The attacker, 20-year-old Omar Alabed, was shot and taken to a hospital for treatment, the military said.
Alabed posted a note on Facebook prior to the attack, writing: "I am going there and I know I am not going to come back here, I will go to heaven. How sweet death is for the sake of God, his prophet and for Al-Aqsa mosque."
Palestinian worshippers had clashed with Israeli security forces before Friday's attack. Tensions had mounted for days as Palestinians hurled rocks and Israeli police used stun grenades after the detectors were placed outside the sacred venue, known to Muslims as the Noble Sanctuary and to Jews as Temple Mount.
The Palestinian Health Ministry said three Palestinians died of gunshot wounds in two neighbourhoods of East Jerusalem, some distance away from the epicentre of tension. It later reported a third Palestinian fatality
Israel decided to install the metal detectors at the entry point to the shrine in Jerusalem on Sunday, after the killing of two Israeli policemen on July 14.
(Reporting by Ari Rabinovitch and Nidal al-Mughrabi and Ali Sawafta,; Editing by Edmund Blair)
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