Texas mall shooting updates: What police found after search warrant issued

Christian LaCour, 20, is the first victim of the shooting at the Allen Premium Outlets to be identified.

LaCour died while working as a security guard at the outlet mall, his sister said.

"He was a really sweet kid," Brianna Smith told ABC News over the phone. "I’m sad that he’s gone.”

Christian's mother, Tracye LaCour, asked for privacy, telling ABC News that they are praying for the families of the other victims.

-ABC News' Miles Cohen

The suspect in the Allen, Texas, mall mass shooting was identified Sunday as Mauricio Garcia, according to law enforcement officials briefed on the investigation.

The 33-year-old Garcia was fatally shot by a police officer who rushed to the gunfire and confronted him at the outlet mall on Saturday afternoon, police said.

The Texas Department of Public Safety, which is leading the investigation, was searching Mauricio's home and vehicle on Sunday. The agency declined to comment further on Garcia and said the motive for the shooting remains under investigation.

President Joe Biden said the assailant was dressed in tactical gear and armed with an AR-15-style assault weapon he used to gun down eight people and injure at least nine others.

At least three people wounded in a mass shooting at an Allen, Texas, outlet mall remained in critical condition on Sunday, according to police.

Four victims were taken to Medical City McKinney, a trauma center in McKinney, Texas, about seven miles from Allen. Three of the patients were in critical condition and one was listed in fair condition, according to a statement Sunday from the Allen Police Department.

Eight victims were killed in the attack and a total of nine people were injured, police said. The shooter, whose name has not been released by police, was confronted and fatally shot by a police officer.

Among the injured, one patient was transferred from Medical City McKinney to Medical City Plano and was in fair condition. Another patient was transferred to Medical City Children's Hospital in fair condition, police said.

"We are a strong and caring community and we want all of the victims and their families impacted by this tragedy to know that we will wrap our arms around you, and we are here for you," Allen Mayor Kenneth M. Fulk said in a statement released Sunday. "The City of Allen pledges to offer our complete support. We know you are grieving, we are grieving. Rest assured, the nation and the world are also grieving."

President Joe Biden is renewing his call for Congress to pass an assault weapons ban following Saturday's mass shooting at a Texas outlet mall.

"Yesterday, an assailant in tactical gear armed with an AR-15 style assault weapon gunned down innocent people in a shopping mall, and not for the first time. Such an attack is too shocking to be so familiar," Biden said in a statement released Sunday.

"And yet, American communities have suffered roughly 200 mass shootings already this year, according to leading counts. More than 14,000 of our fellow citizens have lost their lives, credible estimates show. The leading cause of death for American kids is gun violence," Biden said.

Biden argued that "some progress" has been made as a result of the Bipartisan Safer Communities Act, and his various executive actions, but blasted GOP lawmakers, saying, they "cannot continue to meet this epidemic with a shrug. Tweeted thoughts and prayers are not enough."

"Once again, I ask Congress to send me a bill banning assault weapons and high-capacity magazines. Enacting universal background checks. Requiring safe storage. Ending immunity for gun manufacturers. I will sign it immediately. We need nothing less to keep our streets safe."