Kevin O’Brien RESOLVED O'Brien, circa 2009 Missing Since 08/24/2009 Missing From West Chester, Pennsylvania Classification Endangered Missing Sex Male Race White Age 28 years old Distinguishing Characteristics Caucasian male. Details of Disappearance O'Brien disappeared from West Chester, Pennsylvania on August 24, 2009. Later that year, his body was found in Windham, Maine. It remained unidentified until April 2012. O'Brien's death has been ruled a suicide. Investigating Agency - Source Information Porchlight International for the Missing and Unidentified . .