Police say the white man in his twenties walked into the carpet shop and made at least one reference about the grotesque terror network.
An employee of Western Carpet Center, Lynnwood, Washington claimed that he heard the man’s comments while he escorted the suspect to the shop’s toilet.
Evan Wickham claimed that on the walk, the man immediately started making odd comments about the Middle East.
The shop’s owner, David Schultz, added the man referenced ISIS and walked while talking about being armed.
Washington State police shot dead a man who allegedly was talking about ISIS
He spoke something about how he knows we’re trying to kill him and his parents
“I heard the word ISIS mentioned,” said Mr Schultz.
“[He] spoke something about how he knows we’re trying to kill him and his parents, that was pretty much all I needed.
“I came around the corner and called 911.”
Officers rushed to the scene where they confronted the man, who by now was carrying a large knife.
The suspect ran out into the middle of a busy road attempting to escape, but three officers followed and demanded that he dropped the vicious weapon.
A store owner phoned police after he made references to carrying a weapon
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The man reportedly refused and began moving towards the officers, before officers began shooting the suspect, halting him in his tracks.
Mobile phone footage from an unidentified witness shows the moment that Officer Aaron Snell fired the shots, which would turn out to be fatal.
The disturbing video captures the sound of the six gunshots, from across the road, as officers rush to the aid of the now stricken suspect.
Maximo Ramirez Vasquez, who witnessed the shooting, confirmed the man was holding a weapon at the time of the incident.
He said: “The guy had one knife in the hand, I can’t remember right or left.”
The man reportedly made the comments inside the shop before being shot outside
Officers attempted to revive the suspect with CPR, but their attempts were unsuccessful, with the suspect dying at the scene.
Another witness added: “I am still shocked, I can’t believe it.
“I looked over and they’re chasing this guy, he had a knife and the cops were telling him to put it down and he didn’t listen and he tried to cross the street and rush towards the cops, and the cops shot him.”
In a statement investigator said three officers responded to the call but only one opened fire. That officer was described as a three-year veteran with Lynnwood Police Department, it added that he has been placed on administrative leave during the investigation.