Yaroslav Victorovich Iventyev RESOLVED Iventyev, circa 2003 Missing Since 01/31/2003 Missing From Jacksonville, Florida Classification Endangered Missing Age 22 years old Height and Weight - Distinguishing Characteristics - Details of Disappearance Iventyev disappeared from Jacksonville, Florida on January 31, 2003. In July 2015, his remains were found in his car, which was submerged in a retention pond off Bowden Road. Foul play is not suspected in his death. Investigating Agency - Source Information First Coast News . .