Frantic parents described waiting to hear from their children after the shooting at a Texas elementary school.
Twenty-one people were killed in the filming at Robb Elementary School in Uvalde, including 19 children and two teachers.
Officials say 18-year-old Salvador Ramos entered the school with a handgun and possibly a rifle before opening fire.
Video appears to show shooter entering school – live updates
Rosa and Arizmendia had picked up their daughter early from school after an awards ceremony, but were looking for their niece, calling hospitals, police and firefighters.
“It’s like a horror movie,” Ms Arizmendia told NBC.
“If it’s not our child, it’s someone we know. It’s our neighbors.”
Melissa Arrendondo’s 10-year-old son was in the classroom next to the room where many children and the teacher were shot.
The 38-year-old was working at a convenience store when the news broke and waited an hour to find out her son, Jose, was fine.
“I felt like my heart was in my throat,” she said.
She said her son asked to leave early after the awards ceremony but was told by her husband to finish the school day.
“As soon as I heard my son was fine, my heart kind of sank for everyone, because as a mother who has lost a child, I know that feeling,” Ms Arredondo said.
“I know it takes time to heal and then to mourn classmates.”
“My heart is broken into a million pieces”
Fourth-grade teacher Eva Mireles was named as the first victim and another teacher, Elisa Avila, is expected to survive after “intense surgery”.
Ms Mireles’ cousin, Cristina Arizmendia Mireles, wrote on Facebook: “My beautiful cousin! Such a devastating day for all of us! My heart is broken into a million pieces.”
His aunt, Lydia Martinez Delgado, posted a tribute on Facebook, asking for prayers for her family and the town of Uvalde, located 130 km west of San Antonio.
“I am furious that these shootings continue. These children are innocent. Guns should not be readily available to everyone,” she said in a statement.
“This is my hometown, a small community of less than 20,000 people. I never imagined this would happen to loved ones in particular.
“All we can do is pray hard for our country, our state, our schools and most importantly everyone’s families.
The school has 570 students in grades two through four, and nearly 90% are Hispanic.
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