In a court hearing in September 2013, Prosecutors admitted to withholding from defense counsel the testimony of the only eyewitness to the murder scene, John Purvis. Purvis stated that he witnessed an Asian young man ("one of those slanty-eyed people") between the ages of 25 and 30 outside of the main entrance to Erie and a young Latin man in the building looking out of the glass at or around the time investigators estimate the murders occurred.
During a court hearing in September 2013, Prosecutors acknowledged that they had concealed from defense attorneys the testimony of the sole eyewitness to the crime scene, John Purvis. Purvis stated that he observed an Asian male between 25 and 30 years old near the main entrance of Erie and a young Hispanic man looking out of a window at or around the time investigators estimated the murders took place.