1. On the hilltop Thursday evening, it was not clear which side opened fire first.

2. Hundreds of youths had gathered on the hilltop to prevent any further destruction of the settlement.

3. For instance, a square ditch at the site indicates that the hilltop may have once held a Roman temple.

4. Israel says the measure is necessary for security after the weapons used to kill the policemen were smuggled into the hilltop compound.