Police have released video footage of an officer killing a neo-Nazi gunman and quickly ending a mass shooting that left eight people dead and seven others wounded at a Dallas-area shopping mall.

It took four minutes for a neo-Nazi with an arsenal of firearms to kill eight people and wound seven others at a Dallas-area shopping center before a police officer ended the rampage, likely saving untold lives.

Authorities say the mass shooting at a suburban Dallas shopping mall lasted three to four minutes before a local police officer shot and killed the gunman.

The shooter who killed eight people at a Dallas-area mall was wearing a patch that read “RWDS," short for “Right Wing Death Squad.”.

The second deadliest mass shooting this year at a mall near Dallas, Texas may have been committed by a gunman who had right wing extremist motives and Neo Nazi Views. Mauricio Garcia was shot and killed by police after gunning down eight people on Saturday.

A law enforcement official says federal investigators are looking into whether the gunman who killed eight people at a Dallas-area mall expressed an interest in white supremacist ideology.

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.