Mass shooting at El Paso shopping center

People attend a memorial for those who lost their lives in Saturday’s attack in El Paso.  (Mark Lambie / El Paso Times)

Twin sisters Jessica Torres, left, and Danielle Novoa hold an American flag during the Hope Border Institute prayer vigil for the victims of Saturday’s mass shooting in El Paso.  (Associated Press)

Cathe Hill cries during a vigil for victims of Saturday’s mass shooting in El Paso. “There’s no such thing as a stranger here in El Paso,” Hill said of the effect the shooting had on the community.  (Associated Press)

Bishops from the border region offer prayers during the Hope Border Institute prayer vigil Sunday in El Paso, a day after the mass shooting.  (Associated Press)

A family prays during a vigil Sunday in El Paso.  (Mark Lambie / El Paso Times)

People grieve during a vigil Sunday in El Paso.  (Mark Lambie / El Paso Times)

Rene Aguilar and Jackie Flores pray at a makeshift memorial for the victims of Saturday’s mass shooting in El Paso.  (Associated Press)

From left, Melody Stout, Hannah Payan, Aaliyah Alba, Sherie Gramlich and Laura Barrios comfort one another during a vigil for victims of the shooting Saturday in El Paso.  (John Locher / Associated Press)

A woman sits next to a sign with a message that reads: “No More Guns! Make Love,” in Ciudad Juarez, Mexico, where people are gathering for a vigil for several Mexican nationals who were among those killed in the El Paso shooting.   (Christian Chavez / Associated Press)

A vigil for victims at St. Pius X Church for the El Paso victims.   (Mario Tama / Getty Images)

People arrive at MacArthur Elementary School in El Paso, which is serving as a reunification center, as they await word about friends and family.   (Briana Sanchez / El Paso Times )

Walmart employees react after the mass shooting at their El Paso store.   (Mark Lambie / El Paso Times)

A police officer stands outside a home in Allen, Texas, associated with the suspect in Saturday’s shooting in El Paso.   (Jake Bleiberg / Associated Press)

An El Paso police officer interviews a witness who was inside the Walmart where the shooting occurred.  (Mark Lambie / El Paso Times)

Law enforcement officers respond to the shooting.  (AFP/Getty Images)

Kendall Long, left, comforts Kianna Long, who was inside the Walmart when the shooting broke out.   (Ivan Pierre Aguirre / EPA-Shutterstock)

Police interview witnesses at the shopping center after the shooting.   (Mark Lambie / El Paso Times)

Law enforcement officers at the scene.   (Joel Angel Juarez / AFP/Getty Images )

Law enforcement officers at the scene.   (Joel Angel Juarez / AFP/Getty Images)

Walmart customers are escorted from the store after a gunman opened fire on shoppers.  (Mark Lambie / El Paso Times )

Police assemble near the scene of the shooting.   (Ivan Pierre Aguirre / EPA/Shutterstock )

The scene at the El Paso shopping center after the shooting.   (Joel Angel Juarez / AFP/Getty Images)

A law enforcement officer stands guard outside the Walmart.   (Ivan Pierre Aguirre / EPA/Shutterstock )

Abandoned shopping carts at the scene of the shooting.   (Ivan Pierre Aguirre /EPA/Shutterstock )

A woman speaks with an officer after the shooting.   (Mark Lambie / El Paso )

Law enforcement officers patrol the area.   (Joel Angel Juarez / AFP/Getty Images)

Evacuees wait in the parking lot.   (Joel Angel Juarez / AFP/Getty Images)

Police assemble near the Walmart.   (Ivan Pierre Aguirre / EPA/Shutterstock )

A police officer stands by at an exit from the store.   (Ivan Pierre Aguirre / EPA/Shutterstock )

Law enforcement officers make their way toward the shooting scene.   (Rudy Gutierrez / Associated Press)

Law enforcement officers patrol outside the Walmart.   (Joel Angel Juarez / AFP/Getty Images)