Nearly 20 officers stood in a hallway outside classrooms during this week's attack on a Texas elementary school for more than 45 minutes before agents used a master key to open a door and confront a gunman, authorities said on Friday. 

The on-site commander believed the gunman, 18-year-old Salvador Ramos, was barricaded in a classroom at Robb Elementary School in Uvalde during Tuesday's attack and that the children were not at risk, Texas Department of Public Safety Director Steven McCraw said at a news conference.

"Of course it was not the right decision. It was the wrong decision," he said.

At a memorial in the town square, the reaction to this news was mixed. Jose Ale, 41, attended Robb Elementary and says he had nephews and nieces at the school that day. Raul Enolasco, 72, a retired teacher at Uvalde High School, says emotions are high, and that people shouldn't rush to judgment.