- But we begin tonight with this emergency meeting just a short time ago amid troubling new revelations tonight after that high school student shot two staff members. Overnight, that student's body found some 50 miles away. And tonight, we learned that the student had been kicked out of another school before because of a weapon. And that's why at this new school he would undergo pat downs, unlike the rest of the students. Tonight, here are the images from inside the building yesterday. The officers there on the scene after those staff members were both shot, both recovering tonight, one having undergone surgery. And tonight, the new images here-- high school students from across Denver rallying outside the state capital today. They and their parents tonight demanding answers. ABC'S Mola Lenghi leading us off in Denver. MOLA LENGHI: Tonight, Denver's school board holding an emergency meeting with parents demanding answers after a student shot and wounded two deans as he was being searched for weapons inside his high school. Officials say the suspect, identified as 17-year-old Austin Lyle, was found dead in a wooded area 50 miles from East High School last night after a 10-hour manhunt. And tonight, law enforcement sources confirming to ABC News that back in 2021, Lyle was expelled from a different school after bringing a weapon. And in a separate incident, he was once charged as a minor with possession of a dangerous weapon. - When you find somebody who is in possession of a weapon, I feel like they automatically-- they have to go. They're putting others in harm. MOLA LENGHI: Lyle, who school leaders described as potentially violent, began attending East High this year under a safety plan requiring him to be patted down and searched for weapons every day. In the wake of the shooting, officials announcing school resource officers from the Denver PD will now be posted at all public high schools after they were removed back in 2020. But parents still concerned. - We can't say, OK, well, we're just going to trust that they're going to figure it out. There's going to be two armed safety officers here in this giant school with over 3,000 of you. How do we just send them here and cross our fingers? MOLA LENGHI: Sophomore Grace Taub says the threat has become part of everyday life at East High. - This is so normal at this point. And it's not an East problem. This is a district problem, a city problem, a national problem. MOLA LENGHI: Tonight, both victims now recovering. Dean Eric Sinclair remains hospitalized in serious condition. And Dean Jerald Mason, seen here smiling from his hospital bed, has been released. Well, the Denver Public School district removed their school resource officers from campuses back in 2020 in the wake of George Floyd's murder. And tonight, the school board announcing that officers will return to campuses for the rest of this year. And David, they will vote this summer on whether to make that move permanent. DAVID: All right. Mola Lenghi leading us off tonight. Mola, thank you.