1.   Israeli troops, meanwhile, entered the West Bank towns of Dahariyah and Bir Zeit and the Ein Hilmeh refugee camp and carried out arrest sweeps.

2.   An army statement said the arrest sweep was conducted in the West Bank and those detained were being interrogated by Iraeli security forces.

3.   Angered by the explosion, PLO Chairman Yasser Arafat ordered an arrest sweep against Hamas, the group to which the militants belonged.

4.   Arafat has conducted arrest sweeps after previous Hamas attacks.

5.   Arafat has carried out arrest sweeps, mostly of lower-level activists, in the past in response to suicide bombings.

6.   Arafat has conducted arrest sweeps after previous Hamas attacks against Israel.

7.   Arafat has ordered such arrest sweeps in the past after suicide bombings, but has always released the detainees later.

8.   Arafat has ordered such arrest sweeps in the past in response to suicide bombings.

9.   Arafat has ordered such arrest sweeps in the past in response to suicide bombings, but he has always released the detainees later.

10.   Arafat launched an arrest sweep last week after a suicide bomber from Islamic Jihad attacked a checkpoint outside a Jewish settlement in the Gaza Strip and killed three soldiers.