Colorado mass shooting suspect James Holmes appears in court, Monday July 23, 2012.
(CBS/AP) CENTENNIAL, Colo. - The father of one Colorado shooting victim could do nothing more than stare at the red orange-haired alleged murderer of his 24-year-old son.
Tom Teves sat in the front row Monday as a judge advised Holmes of the allegations against him. His son, Alex, was killed in the Friday shooting at a packed Aurora, Colo. movie theater that took the lives of at least 12 people, injuring 58 more.
Holmes showed little emotion during the hearing, which appeared to anger some family members of victims who attended. He didn't speak once, allowing his attorneys to answer questions for him. He looked as if he were numb to the proceedings, but prosecutors said they did not know if he was on medication at this time.
Homes allegedly entered a midnight screening of "The Dark Knight Rises" at Century 16 theaters through the fire exit, threw two smoke bombs and then fired round after round at the panicked audience who scrambled to escape. Many of the victims still remain in critical condition.
Police stopped him outside the theater and noticed that he was holding a non-regulation gas mask which raised an alarm. He was taken into custody on suspicion of first-degree murder and could also face additional counts of aggravated assault and weapons violations. He later told police that his apartment contained explosives but has not cooperated since then.
Prosecutors are considering seeking the death penalty against Holmes, but said they will consult with victims' families before making their decision.
At the hearing, two women held hands tightly, one shaking her head. Relatives from at least five different victims were present during the morning's proceedings.
David Sanchez, who waited outside the courthouse during Holmes' hearing, said his pregnant daughter escaped uninjured but her husband was shot in the head and was in critical condition. His daughter was delivering their baby on Monday.