You Have the Right Person Editor's Note: An earlier ABC News broadcast report suggested that a Jim Holmes of a Colorado Tea Party organization might be the suspect, but that report was incorrect. ABC News and Brian Ross apologize for the mistake, and for disseminating that information before it was properly vetted. A California woman who identified herself as the mother of James Holmes, the 24-year-old man federal authorities said is the suspect in a mass shooting in an Aurora, Colorado movie theater, told ABC News her son was likely the alleged culprit, saying, "You have the right person." The woman, contacted at her home in San Diego, spoke briefly with ABC News and immediately expressed concern her son may be involved in the shooting death of at least 12 people overnight. Holmes, 24, was identified by federal authorities as the man in custody, accused of killing at least 12 people and injuring 50 others during a midnight showing of the blockbuster movie "The Dark Knight Rises." At a morning briefing, local police said that the apartment appeared to be booby-trapped. A thousand miles away in San Diego, several police cars have arrived at the home of Holmes' mother. James Holmes was a student at the University of Colorado Denver Medical Campus but had dropped out in June, according to a school official. He attended high school in California, a police spokesperson there said. The police spokesperson provided a statement from the Holmes family in which they said their "hearts go out to those who [were] involved in this tragedy and to the families and friends of those involved." The spokesperson said the family was "very upset" and the incident "has taken everyone by surprise." Witnesses to the shooting said that a man appeared at the front of the theater about 20 minutes into the movie with a rifle, handgun and gas mask. ABC News' Lee Ferran, Jack Date, Jason Ryan, Clayton Sandell, Kevin Dolack contributed to this report.