'Thor' Actor With Alleged History Of Erratic Behavior Under Investigation After Threatening Mass Shooting

An actor who allegedly has a history of physically and verbally attacking various people in the entertainment industry is now under investigation after insinuating threats of a mass shooting on social media.

Isaac Kappy became the subject of the Los Angeles Police Department's Threat Management division on July 27 after displaying alarming behavior, according to TMZ. Kappy had been allegedly harassing and stalking actor Seth Green and his wife, actress and model Clare Grant.

In a post on social media, Kappy accused Green of pedophilia. It is unclear when the video was originally posted.

"I'm f*cking tired of people lying," he says in the video. "The world is changing. We're entering a new era."

Kappy has allegedly also physically assaulted Paris Jackson, daughter of Michael Jackson, at a game night gathering, according to TMZ. It is unclear when that incident allegedly occurred. 

A tweet by Kappy on July 26 referred to potential violence the people of Hollywood would face should he feel his life was threatened.

"In light of the interesting traffic happening around my house I want to make something CRYSTAL CLEAR: while I am a VERY strong advocate of peaceful disclosure, make no mistake, assets are in place and if you kill me or even try, it will rain .50 cals in the Hollywood Hills," he wrote.

TMZ also obtained letters Kappy had previously sent to the Green household, in which he proclaimed his love for the couple.

Kappy has previously appeared in the films "Thor," "Fanboys," and "Terminator Salvation," according to IMDB.

On social media, Kappy frequently discusses his beliefs about the secret child sex trafficking that occurs within the film industry. He has previously accused Steven Spielberg of participating in the trade of children for sexual purposes, according to the Santa Monica Observer, a California-based news organization.

[Photo: Instagram]