Washington state police said they were able to thwart a mass school shooting plot by a teenager who had access to a large stockpile of guns and was preparing to pull the trigger on his scheme.

The Pierce County Sheriff's Office said they received an "intelligence communication" about the alleged plot late on Friday and arrested the teenager on Saturday at a residence on 20th Ave.

'It is clear it was only a matter of time before a tragic incident occurred.'

Police performed a search warrant at the home with a SWAT team.

"The search has produced a large quantity of firearms that were both secured and unsecured. Loaded magazines with school shooter writings on them, and clothing and writings that would support a typical mass shooting scenario, were confiscated," the statement reads .

See Full Page