Israeli police released surveillance footage on Thursday showing three Arab Israeli gunmen before they committed the attack at a Jerusalem holy site that killed two Israeli policemen last week.
Police said the gunmen had hidden the weapons in the compound ahead of time, using an accomplice.
Later, Israel closed the site, known to Muslims as the Noble Sanctuary and to Jews as the Temple Mount, for two days of searches.
On Sunday, Israel reopened it gradually and installed metal detectors at the entrances.
Palestinians claim Israel is trying to expand control over the Muslim-run site that is also revered by Jews.
The confrontation could come to a head on Friday, the highlight of the Muslim religious week, when tens of thousands typically converge on the holy site for prayers.
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