Law enforcement officials say the suspect in Friday's mass shooting at a Colorado movie theater sent a package to a university psychiatrist containing a notebook describing an attack.
The package, which reportedly included stick figure drawings of a gunman shooting people, was sent before the shootings. The exact date is unknown.
The University of Colorado Denver said the postal service delivered a suspicious package Monday, which was turned over to authorities within hours.
James Holmes was a Ph.D. student in neuroscience at the university before dropping out of the program last month.
Prosecutors expect to formally charge Holmes on July 30, and he could face the death penalty if convicted.
The July 20 shooting killed 12 people and wounded 58 others.
Meanwhile, the first funeral was held Wednesday in the wake of the shooting. Gordon Cowden, who was 51, was the oldest of the victims.
Judy Goos, second from left, hugs her daughter's friend, Isaiah Bow, 20, while eye witnesses Emma Goos, 19, left, and Terrell Wallin, 20, right, gather outside Gateway High School where witnesses were brought for questioning July 20, 2012 in Denver.
Jacob Stevens, 18, hugs his mother Tammi Stevens after being interviewed by police outside Gateway High School where witnesses were brought for questioning after a shooting at a movie theater, in Denver, Colorado, July 20, 2012.
Shamecca Davis hugs her son, Isaiah Bow, who was an eye witness to the shooting, outside Gateway High School where witnesses were brought for questioning in Denver, Colorado, July 20, 2012.
Police outside of Century 16 movie theater where as many as 14 people were killed and many injured at a shooting during the showing of the movie "The Dark Knight Rises" in Aurora, Colorado July 20, 2012.
An Aurora Police officer talks on his radio outside of the Century 16 theater at Aurora Mall where as many as 14 people were killed and many injured at a shooting at the Century 16 movie theatre in Aurora, Colorado, July 20, 2012.
Aurora Police Chief Daniel Oates talks to media at Aurora Mall where as many as 14 people were killed and many injured at a shooting at the Century 16 movie theater, July 20, 2012.
A SWAT team officer stands watch near an apartment house where the suspect in a shooting at a movie theatre lived in Aurora, Colorado, July 20, 2012.