The suspect bought two AR-15 rifles on May 22, two days before the massacre and six days after his birthday, several law enforcement officials told ABC News. They were legal purchases.
At least 19 children and two teachers were killed at Robb Elementary School in Uvalde, about 90 minutes west of San Antonio, authorities said. Ramos, a student at Uvalde High School, is also dead.
When the gunman broke into a classroom, he barricaded himself and allegedly opened fire, killing 18 students, mostly third and fourth graders, and a teacher, sources said.
MORE: What we know so far about the victims of Texas elementary school shootings
Officers from the Uvalde Police Department and agents from Customs and Border Protection entered the classroom and immediately opened fire on the shooter before shooting him dead.
Investigators run ballistics to determine who fired the fatal shot.
They are also working to uncover how and when he assembled his arsenal, which included the rifle, body armor and numerous magazines recovered at the scene, sources said.
MORE: Texas elementary school live updates
Gunman’s grandfather says he didn’t know the suspect was buying guns
Rolando Reyes, 72, the shooter’s grandfather, told ABC News he had no idea his grandson bought two AR-15-style rifles or that they were in his home.
Since Reyes is a criminal, it is illegal for him to live in a house with firearms. Reyes said he reported his grandson.
Reyes said there were no signs on the morning of the shooting that anything unusual was going to happen. The suspect had a minor argument with his grandmother over paying a phone bill, but nothing significant.
The suspect lived in a front room and slept on a mattress on the floor, according to Reyes. The suspect stayed with his grandparents after falling out with his mother.
SEE ALSO: US Sees Sharp Rise in Fatal Mass Shootings
Reyes said he sometimes took the suspect to work and that he was very calm but did not appear violent. Reyes also said he tried to encourage his grandson to go to school, but the suspect usually just shrugged.
Reyes said the suspect could not drive and did not have a driver’s license. Reyes also wondered how his grandson would have gone there to buy the guns in the first place, or if he had trained on the guns, saying someone must have taken him there.
The grandmother of the suspect who was shot in the forehead will have surgery on Wednesday. Reyes said he believes she will survive.
Classmates say Ramos was known to fight
Students at Uvalde High School told ABC News that Ramos was known for fighting and threatening classmates.
Nathan Romo, who witnessed part of the shooting, had once been friends with him.
“I used to be his friend, but then I told him I was going to stop being his friend because he wasn’t just weird with me, he was weird with a lot of other people,” Romo said.
WATCH: President Biden says ‘we must act’ after Texas school shooting
Several classmates said the suspect rarely went to school, and when he did, he sometimes startled students like Yarelli Vasquez.
“He had scars on his face. I remember someone asking him, ‘What happened? because he showed up to school with them,” Vasquez told ABC News. “He just told them with a smile, ‘I made them myself because I like the way it looks.’
Vasquez had also worked with him at a local restaurant.
Social media accounts are under investigation
The shooter also reportedly left a trail of disturbing social media posts that suggested an attack.
Investigators are now combing through the shooter’s accounts, where he reportedly sent videos and photos of guns and animal cruelty images to other users.
ACTION: Resources for Gun Violence Survivors and Victims
As recently as Tuesday morning, an Instagram account allegedly linked to the shooter sent a photo of a gun lying on a bed to another user.
Law enforcement also reviewed screenshots of messages the suspect allegedly sent to another Instagram user and tagged them in an image of firearms.
The day before the shooting, the shooter also reportedly posted “wait until tomorrow” on the Yubo platform.
ABC-owned television stations contributed to this report.
Copyright © 2022 ABC News Internet Ventures.
https://abc13.com/elementary-school-shooting-texas-shooter-salvador-ramos-uvalde-tx/11893076/ Uvalde, Texas gunman suspect Salvador Ramos bought two guns within days of turning 18