The tactical team that killed Uvalde school shooter Salvador Ramos reportedly arrived at the school earlier than was previously known and was delayed in entering the building Ramos was barricaded inside. 

Two officials briefed on the situation told the New York Times that specialized Border Patrol agents arrived at Robb Elementary School between 12 p.m. and 12:10 p.m. which is roughly 30 minutes earlier than previously thought. 

Additionally, the officials say that the Uvalde Police Department held the Border Patrol agents back from going inside.

The Times reported that the agents "did not understand why they were left to wait."

People leaving Uvalde Civic Center in Texas

People leave the Uvalde Civic Center following a shooting earlier in the day at Robb Elementary School, Tuesday, May 24, 2022, in Uvalde, Texas.  (William Luther/The San Antonio Express-News via AP)

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What happened in the 90 minutes between when the first 911 call of an armed individual with a gun walking toward the school was placed at 11:30 a.m. on Tuesday and the moment when officers shot and killed Ramos has fueled mounting public anger and scrutiny over law enforcement’s response to the rampage.

"They say they rushed in," said Javier Cazares, whose fourth-grade daughter, Jacklyn Cazares, was killed in the attack, and who raced to the school as the massacre unfolded. "We didn’t see that."

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On Thursday, authorities largely ignored questions about why officers had not been able to stop the shooter sooner. Regional Director for DPS South Texas Victor Escalon told reporters he had "taken all those questions into consideration" and would offer updates later.

Texas school shooting police officer lights candle

A law enforcement personnel lights a candle outside Robb Elementary School in Uvalde, Texas, Wednesday, May 25, 2022.  (AP Photo/Jae C. Hong)

On Friday, Texas Department of Public Safety Director Steven McCraw said in response to a question about the New York Times report that officers waited to enter the classroom because they believed they were dealing with a barricaded suspect situation rather than an active shooter situation where children inside the classroom were at risk.

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"In hindsight, of course it was the wrong decision," McCraw said about not entering the building sooner.

A woman writes a message on a memorial

A mourner writes a message on memorial for a victim of Tuesday's mass shooting at an elementary school, in City of Uvalde Town Square on May 26, 2022 in Uvalde, Texas. (Michael M. Santiago/Getty Images)

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The Texas Department of Public Safety did not immediately respond to a request for comment from Fox News Digital.