#RSS Feed IFRAME: http://ad.doubleclick.net/adi/N4854.abcnews.com/B2531646.19;sz=728x90; click=http://log.go.com/log?srvc%3dnws%26guid%3d54C1CFF1-C6A1-4ED9-979 B-5B5CF3C31CA4%26drop%3d0%26addata%3d0:53578:362516:53578%26a%3d1%26go to%3d;ord=2007.12.16.07.39.36? Click Here ABC News ABC News * Good Morning America| * World News| * 20/20| * Primetime| * Nightline| * This Week| * ABC News Now| * i-Caught * Home| * News Brief| * World| * U.S.| * Investigative| * Politics| * Money| * Health| * Entertainment| * ESPN Sports| * SciTech| * Law| * Travel| * More Search ____________________ Go U.S. Home > U.S. Clues Caught on Tape Key to Child Porn Cases Details Like Clothing Manufacturers and Decor Can Help Locate Child Victims Chester Arthur Stiles At a press conference Friday, the Nye County, Nev., sheriff's office identified Chester Arthur Stiles, 34, as a "person of interest" in the case of a young girl seen on a videotape being sexually assaulted. (Las Vegas Metro Police Dept.) [byline_abcnews.gif] By EMILY FRIEDMAN Sept. 28, 2007 Font Size E-mail Print Share For the investigators seeking to identify child pornography victims, every little bit of information - from the designer of the clothing worn in the pictures to the type of wallpaper in the background - helps, law enforcement experts told ABCNEWS.com. "We look at the house and the building and determine whether [the tape was filmed] outside," said Detective Constable Bill McGarry, an image analyst at the child exploitation section of the sex crimes unit at the Toronto Police Department. "We look for anything that will point us to a geographical location and also try isolate objects in the background - furniture, bedding, clothing - things that we can trace to certain manufacturers. It's a lead that can make all the difference." Related Stories * Cops Seek 'Person of Interest' in Sex Assault Video of Nevada Toddler * Pedophile Creates Kid-Friendly Web Site * Church Pedophilia Cover-Up Alleged * Vatican Pledges to Fight Pedophilia * Misguided Measures: Sex Offender Laws Backfiring? * Mothers Fight Pedophile's Web Site * Pedophile Web Writer: 'I'm Not Doing Anything Illegal' * Order Targets Self-Described Pedophile * Self-Described Pedophile to Leave Calif. Top U.S. stories * Big Winter Storm Pummels Northeast * Fla. Storm Overturns Cars, Damages Jail * Bodyguard in Kerrigan Attack Dies at 40 These clues, said McGarry, are vital to cases like the one in Nye County, Nev., where authorities are searching for the second girl seen on a videotape that depicts a man performing sex acts on a young girl. The tape was turned over to authorities by Darren Tuck, who said he found the tape in the desert and has since been arrested on charges of possession and promoting child pornography. While one girl seen on the tape has been located and is safe, according to the Nye County Sheriff's Office, the second, said to be either 4 or 5 years old when the tape was made several years ago, hasn't been identified. Her name is believed to be Madison, police said, based on what they heard on the tape. [UPDATE: Police said late Friday, Sept. 28, that the younger girl in the videotape was found and "safe."] At a press conference Friday, the Nye County sheriff's office identified Chester Arthur Stiles, 34, as a "person of interest" in the case. Stiles is wanted on both state and federal warrants for sexual assault and lewdness with a minor. 'We Look at Every Clue' Less than 1 percent of children who appear in sex tapes are found each year, according to Interpol statistics. That means sex crime investigators are often left with no choice other than to dig deeper into the minute details caught on tape in hopes of pinpointing both the victimized children and their assailants. With so many videos to sift through, deciphering the country of origin can be a challenge in and of itself. McGarry will meet with a group of international investigators on a secure Web site to trade information about particular videos and victims. Once the location of the video is determined, an investigator from that region will take over the case. Often, though, investigators will collaborate no matter where they are located to close a particular case. Clues Caught on Tape Key to Child Porn Cases 123Next | Read All 72 Comments and Post Your Own Your Opinion Comment WHAT OTHERS ARE SAYING 72 Comments __________________________________________________ __________________________________________________ __________________________________________________ __________________________________________________ __________________________________________________ Submit Post Video [image-talkback.jpg] Connect with Newsmakers [image-icaught.gif] Capture video of a news event? Upload it now. 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