Israeli Defence Minister Ehud Barak has ordered the army to seal off the West Bank for 48 hours, until midnight on Saturday, an army spokesman says.
The action was taken "for security reasons" including a risk of attacks, the spokesman said on Friday. The area was sealed off at midnight on Thursday, local time.
Israeli police have also said they would bar Muslim men under the age of 50 from prayers on Friday at Jerusalem's Al-Aqsa mosque compound, one of Islam's holiest sites, fearing unrest.
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Increased tensions
The moves come after violent clashes at the site, which is also holy to Jews, during last week's Muslim prayers, and fresh tensions over Israeli plans to build 1,600 homes for Jewish settlers in mostly Arab east Jerusalem.
The army said some medical and religious workers, teachers, journalists and others would be exempted from the West Bank closure.
"The IDF (armed forces) will continue to operate in order to protect the citizens of Israel while maintaining the quality of life of the Palestinian population in the area," the military said in a statement.
Since the outbreak of the second Palestinian uprising in September 2000, Israel has usually sealed off the West Bank ahead of major holidays, saying the move is necessary to prevent attacks.
This is the first time such a measure has been taken outside of a major Jewish occasion.
