Posts show mall gunman researched attack, had Nazi tattoos

A womand signs a cross as a child looks on at a makeshift memorial by the mall where several people were killed in Saturday's mass shooting, Monday, May 8, 2023, in Allen, Texas. (AP Photo/Tony Gutierrez)

Sam Morin, 17, right, and Briason Foley, 15, hold protest signs outside a prayer vigil after a mass shooting the day before Sunday, May 7, 2023, in Allen, Texas. (AP Photo/LM Otero)

DALLAS — The man accused of killing eight people and wounding several others in a mass shooting at a suburban Dallas shopping mall researched when it was busiest and posted photos on social media in mid-April of a store near where he ultimately started his attack.