Aurora suspect sent ominous letter

CENTENNIAL, CO - JULY 23: James Holmes (L) makes his first court appearance at the Arapahoe County Courthouse with his public defender Tamara Brady on July 23, 2012 in Centennial, Colorado. According to police, Holmes killed 12 people and injured 58 others during a shooting rampage at an opening night screening of "The Dark Knight Rises" July 20, in Aurora, Colorado. (Photo by RJ Sangosti-Pool/Getty Images)
The suspect in the Aurora, Colo. shooting that left 12 people dead and 58 injured sent a letter to the University of Colorado Anschutz Medical Campus that threatened a shooting and even included pictures -- but the letter sat unopened until Monday, CBS News has learned. Watch John Millers' full report on the "CBS Evening News" at 6:30 p.m. ET/PT.
  • John Miller

    John Miller is a senior correspondent for CBS News, with extensive experience in intelligence, law enforcement and journalism, including stints in the Office of the Director of National Intelligence and the FBI.