GREELEY, Colo. (11/19/07)--The Shawna Nelson murder trial, resulting from a fatal shooting at a Colorado credit union, has been delayed after a request by defense attorneys and likely will not begin until 2008. The trial was set to commence Nov. 29 in Larimer County Court, but two events changed the timeframe for the case. A defense witness changed her testimony and will not testify that Nelson told her about the plan to commit murder; and an expert witness has come forward with new evidence in the case, regarding tire tracks at the murder scene (Greeley Tribune Nov. 16). In January, Nelson, 35, was arrested in the slaying of Heather Garraus, 37, outside the Greeley branch of the Denver-based Colorado State Employees CU. Garraus worked at the branch (News Now Jan. 31). Nelson, who has been charged with first-degree murder and faces life imprisonment, is accused of shooting Garraus the evening of Jan. 23 outside the credit union as Garraus was leaving work. Garraus was found in the credit union parking lot and was taken to North Colorado Medical Center, where she was pronounced dead as a result of multiple gunshot wounds (News Now July 30). After the murder, authorities learned that Shawna Nelson and Ignacio Garraus, a Greeley police officer and Garraus's husband, had been involved in an affair. Ignacio Garraus has since resigned from the police department and moved out of the state (News Now Jan. 31).