The suspect apprehended in the mass shooting at a suburban Denver movie theater has been identified as James Eagan Holmes, 24, law enforcement sources told CBS News correspondent Bob Orr.
Twelve people died in the shooting at a showing of the new Batman film "The Dark Knight Rises" in Aurora, Colo., early Friday morning. A law enforcement source told Orr the shooting appears to have been carried out by a lone gunman.
One federal official told CBS News that at this time Holmes appears to have been "under the radar." CBS News reports Holmes doesn't appear to have a criminal record in Colorado or in California's San Diego County, where he lived previously. Pentagon officials said there is no record of Holmes having served in any branch of the military.
According to the University of Colorado School of Medicine in Denver, Holmes dropped out of medical school last month, The Associated Press reported. School spokeswoman Jacque Montgomery said she did not know when Holmes started school or why he withdrew.