Officers engaged in firefight with accused shooter inside school: Police

Survivors of the school shooting allege the suspect played music and made jokes during the massacre.
3:33 | 05/21/18

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Transcript for Officers engaged in firefight with accused shooter inside school: Police
to have you with us to start a new week here. Authorities before the cameras just a short time ago, and what he revealed about the deadly school shooting in Santa fe, Texas. A moment of silence across the state today, and at the school where ten crosses 1257bd. The faces of each of those who died, eight students and two teachers. And for the first time tonight, the father of the gunman is now speaking out, saying he wishes his son would have shot him instead of the kids. And this evening here, new details from inside the shooting. ABC's Marcus Moore leads us off from Texas tonight. Reporter: Tonight, the galveston county sheriff telling reporters that as students were evacuating Santa fe high school, inside, police officers were engaged in a fire fight with the gunman. The heroes from that I.S.D. Engaged this individual in approximately four minutes, and stayed engaged with him, keeping him contained an engaged, so that other heroes that continued to arrive evacuate the teachers, the administrators and the students from the school. Reporter: The sheriff saying his own granddaughter was in that school, just three classrooms from where Chris cornered the alleged shooter, dimitrios pagourtzis. Right now, he's in the galveston county jail under suicide watch. In there for capital murder. 17 years old. Reporter: Just one week before the shooting, pagourtzis seemed like a happy teenager, dancing at his Greek orthodox church. The video posted by TMZ. Tonight, his distraught father antonios telling "The wall Street journal" tonight, his son was a good boy, who was bullied at school, adding, "I believe that's what was behind" this shooting. Antonios pagourtzis saying he himself came to America as a young boy, with just a grammar school education. He built a business here. And now, he describes visiting his son in jail, "He could not look at me in the eyes. He is confused, can't remember what happened. He said, "He wants to apologize to his sisters." He said, "He'll be strong and help us see this through." The father saying, "It would have been better if he shot me than all those kids." Police say the father's guns were used to carry out the massacre. Do we know how he ended up with those weapons? It does appear that the guns were kept in a locked -- a locked gun cabinet or gun safe. How he got access to them, we don't know. Reporter: Survivors say he taunted his victims after allegedly gunning them down. He was playing C, making jokes while he was doing it, had like, slow Gans, like rhymes. Reporter: What was he saying? Every time he would kill someone, he would say, "Another one bites the dust." Reporter: Today, a moment of silence at a growing memorial in front of the school. As the survivors recover from their wounds, kauls for change coming from near and far. Texas native Kelly Clarkson last night at the billboard music awards. And I'm so sick of moments of silence. It's not working, like, obviously, so -- sorry. So, why we not do a moment of silence, why don't we do a moment of action? And Marcus Moore joining us mow from Texas tonight. And hard us can, the sheriff today praising the heroism of the officers who engaged with the shooter. One of those officers still in the hospital tonight? Reporter: David, that's right. His name is John Barnes, and he is in critical conditionntes D tonight. He spent more than 20 years working as a police officer in Houston and reportedly never fired his weapon in the line of duty. Tonight, the sheriff says his bravery saved lives. David? Marcus Moore in Texas for us again tonight. Marcus, thank you.

This transcript has been automatically generated and may not be 100% accurate.

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