The news of the murders of two Dartmouth College professors, Susanne and Half Zantop, has shaken the campus ever since a dinner guest found the couple's bodies Saturday evening in their study. Citing the "integrity" of the investigation process, officials have not yet released a cause of death.

Investigators have ruled out numerous leads in the murders, but said an arrest is not imminent, according to Dan Mullen, assistant attorney general of New Hampshire.

In a news conference yesterday, New Hampshire Attorney General Philip McLaughlin announced that investigators decided a bloody handprint found Monday in a college dormitory was not related to the murders.

However, investigators have not yet been able to narrow the field of possibilities much more. Police say they still cannot rule out the possibility the killings were random, that they resulted from a robbery, that a student was the killer, that the killer is still in town or that there are multiple killers.

More than 30 investigators on snowshoes spent Sunday afternoon scouring the snowy woods around the Zantop's house and are still searching for clues.

"We're not ruling in, or out, anything," McLaughlin said.

Although born in Germany, both Half Zantop, 62, and Susanne Zantop, 55, had been naturalized and had taught at the college for over two decades.

The Zantops have two daughters, who both arrived in Hanover yesterday, and other family members are still arriving, according to Dartmouth Public Affairs Officer Tamara Steinert. Dartmouth is planning a memorial service, but has not finalized details.