UVALDE (KFDX/KJTL) — A news conference was held in Uvalde with an update on the investigation into the mass shooting at Robb Elementary School on Tuesday, May 24, 2022.

The press conference was slated to begin at 1:30 p.m. Central on Thursday, May 26, 2022.

Victor Escalon, Texas DPS Regional Director for the South Texas Region, spoke to reporters during the conference and took a few questions.

The update addressed recent questions and criticisms facing law enforcement officials on how much time elapsed before they stormed the school to stop a gunman who killed 19 children and two teachers.

The motive for the massacre — the nation’s deadliest school shooting since Newtown, Connecticut, a decade ago — remained under investigation, with authorities saying the gunman, 18-year-old Salvador Ramos had no known criminal or mental health history.

During the siege, which ended when a U.S. Border Patrol team burst in and shot the gunman to death, frustrated onlookers urged police officers to charge into the school, according to witnesses.

“Go in there! Go in there!” women shouted at the officers soon after the attack began, said Juan Carranza, 24, who watched the scene from outside a house across the street.

Texas Department of Public Safety Director Steve McCraw said Wednesday that 40 minutes to an hour elapsed from when Ramos opened fire on the school security officer to when the tactical team shot him.

“The bottom line is law enforcement was there,” McCraw said. “They did engage immediately. They did contain (Ramos) in the classroom.”

But a department spokesman said Thursday that authorities were still working to clarify the timeline of the attack, uncertain whether that period of 40 minutes to an hour began when the gunman reached the school, or earlier, when he shot his grandmother at home.

“Right now we do not have an accurate or confident timeline to provide to say the gunman was in the school for this period,” Lt. Christopher Olivarez told CNN.

Border Patrol Chief Raul Ortiz did not give a timeline but said repeatedly that the tactical officers from his agency who arrived at the school did not hesitate. He said they moved quickly to enter the building, lining up in a “stack” behind an agent holding up a shield.