Dartmouth Slay May Have Roots in Holocaust

Feb. 23 -- Investigators found neo-Nazi and white supremacist literature in the room of one of the teenagers accused in the stabbing deaths of two popular Dartmouth College professors, sources said.

Sources familiar with the investigation told ABCNEWS' PrimeTime the material was found in the room of Robert Tulloch, 17. Investigators have not said whether they believe they have discovered a motive for the brutal killings, though some acknowledged privately that they had strong theories.

The two victims, Half and Susanne Zantop, were both born in Germany, and they were outspoken in their liberal convictions and their view that Germany should take more responsibility for the Holocaust. They were stabbed to death in their home on Jan. 27, Holocaust Remembrance Day.

A spokesman for the New Hampshire attorney general's office, which is investigating the killings, declined to comment on what was found in the suspects' homes or on a possible motive for the crime.

Tulloch and James Parker, 16, were arrested early Monday at a truckstop in Indiana. They were charged as adults with first-degree murder in the stabbings.

Some of Tulloch's friends suggested the material in his room — which included literature about white supremacists, the Third Reich and theories that the Holocaust never occurred — could have been for a school project, according to PrimeTime.

A friend of the Zantops and a fellow professor at Dartmouth said he didn't see any reason to believe that reading neo-Nazi literature would have led anyone to target the two.

"I doubt that they were targeted because of their political history, because I think there are many other people who could have been so targeted just well," Jim Aronson said. "We also have to entertain the hypothesis that these kids will be just infected by that literature and committed such a violent crime, perhaps even randomly."

People who know the two suspects said neither of them seemed like the type to commit a brutal killing, whatever the motivation.