LAS VEGAS -- Police continue to follow up on leads in the nationwide hunt for Chester Arthur Stiles, the man accused of sexually assaulting a toddler and recording it on videotape.

Investigators said the pictures being used to identify Stiles -- which are being broadcast on television and on billboards across the Valley and U.S. -- could be very different from what he looks like now.

Officials from America's Most Wanted are working on generating new information as the investigation continues.

"From what we've learned since the beginning of September, he's gained weight, shaved his mustache," Michelle Sigona, with AMW, said," and changed other physical characteristics about him."

If you have any information that can help police catch Stiles, call CrimeStoppers at 702-385-5555.