The armed Florida teen who is the subject of a “massive manhunt” in Colorado may be behind a disturbing site that encouraged readers to “be the best killer you can be,” according to reports.

Sol Pais — who is “considered to be extremely dangerous” — traveled to Colorado and made threats to commit violence days before the 20th anniversary of the Columbine High School massacre, according to the FBI on Tuesday.

The FBI didn’t disclose the nature of the threats, but a site with deranged journal entries penned under the name “Sol Pais” revealed an obsession with mortality and firearms.

Authorities haven’t confirmed whether the site belonged to the wanted 18-year-old woman. However, a private Instagram with photos resembling those released of Pais by the FBI also includes a link to the page, Heavy.com reported.

The site reportedly shared a drawing of a gun firing with the caption, “being alive is f–king overrated.”

Under the section titled “to do in my lifetime,” the page listed, “self destruct, burn out, walk away, reject apologies, fade,” according to Heavy.com.

Near the bottom, the site uses “1999 – the nobodies ” as a tagline in a possible reference to Marilyn Manson’s song “The Nobodies” about the 1999 Columbine massacre.

Police said Tuesday the teen was “infatuated with Columbine” and bought a pump-action shotgun and ammunition shortly after arriving in Denver from Miami.

Authorities locked down more than 20 other schools Wednesday in the Denver area, including Columbine, after the alleged threat.

With Wires