A little more than a month after a solo-vehicle crash sent three to area hospitals, one of those passengers remains in critical condition. A 16-year-old Maidu High School student remained in critical condition Monday at Mercy San Juan Medical Center, according to spokesman Bryan Gardner. The teen was life-flighted to the center the evening of Nov. 21 and has since stayed in the trauma intensive care unit. The teen was reportedly the back-seat passenger in a 1998 Toyota Corolla that ran off Mt. Vernon Road in Auburn and hit a tree at about 8:30 p.m. Nov. 21. The driver, a 17-year-old Chana High School student, may face felony charges of driving under the influence of alcohol with no license and possession of open containers. The accident is still under investigation and has yet to be formally submitted to the Placer County District Attorney’s Office, according to spokesman Scott Owens. Twenty-nine-year-old Heather Richey will not face charges. Richey was reportedly in the right front passenger seat at the time of the accident. Richey was treated and released from Sutter Roseville Hospital Nov. 25. The 17-year-old Chana student was also treated and released from Sutter Roseville but the date could not be confirmed. -Jenifer Gee