Texas elementary school shooting: Live from Uvalde, Texas
Onlookers have said they urged police to move into the primary school as officers stood by while a gunman was carrying out his rampage, which killed 19 students and two teachers.
The father of 10-year-old victim Jacklyn Cazares said he even suggested to go in himself with other bystanders as he was frustrated police were not doing it themselves.
Details are starting to emerge of the attack and the 18-year-old shooter behind it.
The teenage gunman, identified as Salvador Ramos, barricaded himself inside a classroom before killing the fourth-grade students at Robb Elementary School in Uvalde on Tuesday.
The suspect, with no known criminal history or history of mental illness, was shot dead by an officer on the scene after around 60 minutes.
Facebook has confirmed that he sent a direct message online around 10 minutes before the attack warning that he was going to shoot up an elementary school.
