Man Captured in Video Comes Forward A man captured in a surveillance video could be a key witness in the case of a missing Tucson, Ari. girl as authorities expand their search into Mexico. A group of five people were captured on surveillance video leaving a club near the Celis family home around the time the 6-year-old disappeared. The three women and two men were captured on camera just a block from the Celis house. Police said the group was walking away from a club at 1:30 a.m. in the direction of the Celis' home. One of the men has come forward to police, but police are not yet saying what he has told them. The new surveillance video comes as the search for Isabel widens, crossing over into Mexico. On Saturday, U.S. marshals asked Mexican police for help checking hotels, bus terminals, and businesses in the border town of Sonora where Isabel's photo is being circulated. "The idea of having Mexico involved I think is a logical idea and a good idea at this pointâ¦"The idea that somebody crossed and picked up Isabel and then went back into Mexico is actually realistic," said former FBI agent and ABC News consultant Brad Garrett. Tucson is close to the Mexican border and many in the city are either from Mexico or have connections there. She was last seen around 11 p.m.