21.  In the other attack, a suicide bomber injured several Israelis outside a medical clinic in the West Bank Jewish settlement of Efrat.

22.  Issued after the first two attacks, the statement cautioned that there might be more.

23.  Mullen said he was armed with a knife or scissors and had worn a black ski mask in the first three attacks.

24.  Organizers of the walk-out are also demanding that the administration hold a forum to present to the student body everything officials know about the four attacks.

25.  Police officials said late Sunday that they did not know whether there was any relationship between the two attacks, and no suspects were in custody.

26.  Police said they believed that the three attacks were linked because of their similarities.

27.  Reuters news agency reported that a Hamas source said the two attacks were not coordinated.

28.  Rumsfield and other officials were hesitant to estimate the number of casualties between the two attacks.

29.  The administration has held to its position even though such a shield would have done nothing to prevent the two attacks.

30.  The fact sheet issued by the White House instead focused on the other attacks on Indian troops and civilians that the Lashkar is accused of carrying out.