The two suspects in the shooting, who are 18 and 16 years old, have been charged with 48 counts of murder and attempted murder in addition to other crimes, according to NBC News, CNN, CBS and other outlets. References to the shooting were few, including one by Dakota Mann, who was on the school robotics team with Castillo.
Investigators are also probing whether a a private security guard at the school, Shamson Sundara, mistakenly fired at least one shot at a Douglas County Sheriff's deputy and whether he wounded a student.
While court documents are sealed, the names of charges against the gunmen were listed in electronic court records without any more details.
During a hearing for Erickson, Douglas County District Attorney George Brauchler said that the investigation into the shooting is ongoing, and requested, at the behest of investigators, that arrest affidavits and a probable cause statement in the case be suppressed from public view for two weeks.
Erickson's defense attorneys said in court that they have yet to see any of the evidence in the case, and waived the requirement for a preliminary hearing within 35 days.
Appearing in court on Wednesday, prosecutors identified Alec McKinney as the previously unnamed juvenile accused of going on a rampage at the Highlands Ranch STEM School, alongside his alleged 18-year-old accomplice, Devon Erickson. He wore a jail uniform and was kept shackled at his wrists and ankles after Judge Theresa Slade denied a motion to remove them. It was not clear if McKinney was being charged as an adult.
Earlier Wednesday, the Castillos attended court hearings for the two teenagers accused of killing their son and wounding eight other students.
Colorado law allows prosecutors to file adult charges of serious felonies against 16- and 17-year-olds without prior approval from a judge. Erickson is charged with providing a handgun to a juvenile and McKinney is charged with possession of a handgun by a juvenile.
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Brauchler did not directly address those reports. He was immediately there to respond.
"We're going to hear about very heroic things that have taken place at the school", Douglas County Sheriff Tony Spurlock said shortly after the shooting.
An outside prosecutor has been asked to consider whether an armed security guard credited with capturing one of the two suspects in last week's Colorado school shooting should face any charges.
Jones was shot twice in the leg during the incident. "Adrenaline and tunnel vision are a insane thing", said Jones, who described himself as just a normal teenage kid. I've been involved. The authorities are on the way. "We're a family of three and a little dog, but you know, I feel the love of thousands".
Jones declined to talk about the shooters Tuesday, instead focusing on Castillo and his own physical and emotional recovery.
Lorie Jones makes a point while her son, Joshua, who was wounded while trying to stop a gunman involved in the attack on the STEM School Highlands Ranch last week, and her husband, David, look on during a news conference.
All of the wounded students have been released from hospitals. The two schools are separated by about 7 miles (11 kilometers) south of Denver.