PITTSBURGH -- Target 11 Investigator Rick Earle traveled to Cleveland to get a first-hand look at a group that tracks hate activity.

In an office complex, high above downtown Cleveland, members of the Anti-Defamation League monitor and track hate activity. Because of the nature of their work, the office is protected by video cameras and a security system as a precaution.

"One very important aspect to know is who the haters are and where they are," said ADL Regional Director Shari Kochman.

Kochman said her investigators are closely monitoring hate activity in western Pennsylvania. She would not release specific information because she said she does not want to jeopardize the on-going work.

But Target 11 used information from various civil rights organizations and discovered pockets of hate activity in the Pittsburgh area. We found groups on the North Side, Allison Park and Greensburg. We are not identifying specific individuals or organizations because we don't want to give them the publicity they are after.

A study this year by the Southern Poverty Law Center revealed that hate group activity is on the rise, up 54 percent from 2000. The study cites immigration, the poor economy and the election of the first black president as contributing factors.

Of the 926 hate groups across the country, California has the most with 84. Pennsylvania ranks in the top 10 with 37.

"There have historically been many groups, there have been many individuals who have espoused anti-government or anti-societal opinions and people are free to do that. We're very concerned about the people who go beyond that by espousing violence and the destruction of property. Those are the two hooks that are going to gather our attention," said FBI agent Jeff Killeen, who works in the Pittsburgh field office.

Just last summer, the FBI raided a home in Clearfield County and arrested Brad Kahle. Kahle allegedly told undercover agents who had infiltrated his organization that he was making bean can grenades "to kill police if they raided his home." Kahle is now awaiting trial.

While investigators have said Kahle was allegedly part of a loosely organized group, the FBI is also very concerned about domestic terrorists who operate on their own. The FBI has identified this as the Lone Wolf phenomenon. Two examples of this are Oklahoma City bomber Timothy McVeigh and the two snipers who terrorized the nation's capital.

Earle asked Killeen: "Are there people at this time, right now that you're monitoring, that you are watching in western Pennsylvania?"

Killeen: "Absolutely. You bet that's our business. We're in the suspicion business and we're in the information collection business and if there are individual connected to international terrorism groups or domestic terrorism groups, the lone wolf, that's our business. That's what we do. That's what we're charged to do. That's what's expected from us of the American people."