An alleged child molester had his bond doubled this week after he confessed to having sex with a 12-year-old girl.The suspect, Christopher Allen Biggs, 42, is now being held under a $500,000 bond by order of General Sessions Judge Bill Locke on Tuesday afternoon. He was originally being detained under a $250,000 bond but concerns raised by evidence heard during preliminary hearing prompted the judge to raise his bond.Biggs was bound to the grand jury after a short preliminary hearing that included the testimony of McMinnville police detective Marty Cantrell. During the testimony it was learned the child reported the sexual abuse at school.