Photos: Texas 10 Most Wanted Sex Offenders
Credit: Texas DPS
Reward up to $3,000: In two separate incidents in 1991 and 1995, John Arthur Volker ad sexual contact with a three-year-old female and a nine-year-old female. Both victims came forward about the incidents in 1998. He received seven years probation in 1999 and was required to register for life as a sex offender. At the time of his 1999 conviction, he was living in Humble, Texas, but moved a month later to Houston, where he failed to register. In 2000, the Harris County Sheriff's Office issued three warrants for Volker's arrest for two counts of indecency with a child and one count of failure to register as a sex offender.