Police officers with rifles and at least one ballistic shield were in a hallway at Robb Elementary School around 19 minutes after a gunman entered classrooms there, according to reports from Texas news organizations Monday.
The Austin American-Statesman said the timeline was based on documents it reviewed following the May 24 attack in Uvalde that killed 19 children and two teachers.
The Texas Tribune on Monday night also reported the new details, citing records and surveillance video it had reviewed.
