The City of Portland is flying flags at half staff
On Thursday, Portland Police detectives arrested 16-year-old Parrish Bennette in connection with the killing. Police say evidence suggests Vaughn was killed on March 19, 2011, the day she went missing. Bennette pleaded not guilty to one count of first-degree manslaughter on Friday.
Last weekend, about 75 volunteers along with members of the Multnomah County Sheriff's Office assisted in a search for Vaughn's body around Rocky Butte in Northeast Portland. The search has so far been unsuccessful.