1.   Police had unwittingly herded a crowd of people toward the bomb because of a misleading telephone warning.

2.   As midnight came and passed, police herded the crowds from place to place on the Purdue campus and dispersed them.

3.   As midnight passed, police herded the crowds from place to place on the Purdue campus and dispersed them.

4.   The shooting occurred as guards herded crowds of visitors toward the exit to diffuse an altercation between rival groups of young people, Ambrosino said.

5.   Those slain bore the full brunt of the blast when police unwittingly herded a crowd towards the bomb because of a misleading phoned warning.