Preliminary information gathered during the investigation indicated that the victim and his family were in their residence. At least three suspects came to the residence and forced their way in and assaulted the son of victim when he answered the door. The victim confronted the three once they were inside the house and during the confrontation the victim was shot by one of the intruders. The suspects fled the scene on foot.
The motive for the intruders being at the residence is unknown at this time as the investigation is still ongoing.
UPDATE: On May 20th, 2011 at approximately 10:30am Terrek Corbin was arrested for the murder of Mr. Wallace. Although a suspect early on, it was believed by investigators and the prosecutor’s office, that forensic examination of physical evidence recovered during the subsequent investigation was necessary. That forensic examination, (a baseball hat, handgun and sweatshirt), was conducted by the Washington State Crime Lab. Their examination revealed Corbin’s DNA on the baseball hat that was found with the handgun that was used to murder Mr. Wallace.
It should be noted that the baseball hat, sweatshirt and handgun believed to be used in the commission of this crime were all located together in a garbage dumpster in the 1200 block of S. 7th Street. It was confirmed at that stage of the investigation that the firearm was in fact the weapon used to murder Mr. Wallace. Corbin’s residence at that time was approximately 2 blocks from where the above evidence was recovered.
Corbin was served with arrest documents at the Yakima County Jail where he was incarcerated on other unrelated charges.