1.   As students returned to classes Thursday, federal, state and local law-enforcement officers joined to investigate the bombing.

2.   As tension between the two sides remained high, Israelis have closed off travel between most Palestinian cities, calling it a necessary move while they investigate the bombing.

3.   At least one, Michael Fortier, has been subpoenaed to appear before a federal grand jury investigating the bombing.

4.   Agents investigating the bombings said they were far from concluding whether the same person or group is responsible for both attacks.

5.   Agents investigating the bombings said they were far from concluding whether the same person or group was responsible for both attacks.

6.   He also investigated bombings.

7.   It is still unclear whether Arafat is cracking down on Hamas, trying to pressure the group into negotiating with him or just trying to investigate the bombing.

8.   Monitors investigating the bombing on Tuesday said that they suspected it was connected to the threats, but had not been able to prove that.

9.   Perry said that during their meeting, Fahd had instructed his deputies to provide full assistance to FBI agents and other American officials investigating the bombing last week.

10.   Rosencrans, who has testified before the federal grand jury investigating the bombing, says he told the jurors that Fortier gave him the rifle.