Overview

• A witness to a mass shooting in Allen, Texas claimed to have administered first aid to victims before police arrived.
• Police say the witness's account is not credible and that he arrived after the shooting had already ended.
• The witness called for gun control in media appearances and said police took too long to respond.
• Recordings of 911 calls show the panic during the shooting that left eight dead.and seven injured.
• The shooter, identified as Mauricio Garcia, was shot and killed by police and had an interest in white supremacy.