1.   A law officer subsequently infiltrated the Viper Militia and reported on its activities to Bureau of Alcohol, Tobacco and Firearms investigators.

2.   However, LAPD Chief Willie L. Williams refused Thursday to specify how far officers would be allowed to go, including whether officers could infiltrate civilian organizations.

3.   Protest leaders contend that undercover officers have infiltrated the building that houses their headquarters.

4.   Posing as a neo-Nazi, the bearded and tattooed officer infiltrated the group in December.

5.   Two Missouri undercover officers had infiltrated the group, he said, and the Federal Bureau of Investigation was then warned of the plan.

6.   Two Missouri undercover officers had infiltrated the group, he said, and the FBI was warned of the plan.

7.   Officers will infiltrate groups of suspected hooligans and will have access to a computer data base to identify those intent on violence.