Harrowing footage shows a group of people escaping out of the back door of a Fatburger restaurant in Texas during a mass shooting at a shopping mall in Allen.

A store employee guided shoppers out of the door during the shooting.

Mauricio Garcia, 33, killed eight people with an AR-15-style rifle on Saturday, 6 May.

The gunman was shot dead by an officer who was responding to an unrelated call, police said.

Police are investigating possible neo-Nazi and white supremacist beliefs of the suspect.