Castro said answers were needed about conflicting accounts: "Whether the school security officer and the gunman exchanged fire outside the school," and, "How long law enforcement officers were in adjoining classrooms while the gunman barricaded himself in a classroom with students and teachers."
University Hospital in San Antonio has released a 10-year-old girl, the first of three children who were being treated at the San Antonio center after Tuesday's attack on Robb Elementary School.
Still being treated, according to the hospital, are a 10-year-old girl in serious condition and a 9-year-old girl in good condition.
The shooter's 66-year-old grandmother, who had been shot in the face before the gunman took her pickup to the school, also remains in the hospital in serious condition.
-Megan Menchaca, Austin American-Statesman
School shootings are on the rise. More kids are dying from gunfire outside of school, too.
Including the Uvalde shooting — the second-deadliest elementary school shooting in U.S. history — more people have died in mass killings in schools in the past five years than in the prior 12 years combined. That's according to a database of mass killings kept by USA TODAY, the Associated Press and Northeastern University. A mass killing is defined as an incident in which four or more people are killed, not including the perpetrator. Read more.
Families and community members gathered Thursday to mourn the 19 children and two teachers killed at Robb Elementary School in Tuesday's massacre as more of the victims' identities became known.
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