REDWOOD CITY, Calif. � Scott Peterson's defense dealt blows Thursday to two key pieces of evidence that support the theory that the fertilizer salesman dumped his wife's body in San Francisco Bay.
The credibility of the prosecution evidence � homemade anchors Peterson allegedly used to sink the body of his wife, Laci, and a hair from the boat that is consistent with her DNA � was shaken during a painstaking cross-examination of a police investigator.