veronica's sisters visited with police. a sister back at their home told us 33-year-old mario romero had abused veronica in the past and said it is "a sure thing that he's her murderer." >> police say romero is considered a person of interest in veronica's murder and is wanted for questioning. authorities in mexico are also on the lookout as reports surfaced romero may be trying to take mitchell across the border. >> good evening. i'm nancy grace. i want to thank you for being with us. live, colorado, the whole country on pins and needles. a little 6-year-old boy's life hanging in the balance. and a beautiful silver space-like balloon soaring through the clouds. tonight, it apparently will all end in felony charges. bye-bye, reality show. hello, cell block. >> is this richard? >> yes, it is. >> okay, how long has the 6-year-old been missing? >> just a few minutes. >> was the flying saucer in the back yard? >> yes. >> okay. so it obviously has electronics which he can know how to work it, he gets it up off the air, off the ground? >> no. he doesn't know how they operate. >> he does not know how to operate. so and that's gone