Police are investigating Facebook posts apparently made by the man who killed 10 people with a van in Toronto Monday, sources said.

A Facebook post apparently made by Alek Minassian referred to him as an “incel,” or an “involuntarily celibate” person who was seeking revenge on society, according the CBC.

“The Incel Rebellion has already begun!” the Facebook post read. “We will overthrow all the Chads and Stacys! All hail the Supreme Gentleman Elliot Rodger!”

The CBC said they have not confirmed the posts were Minassian’s — but they bear the same photo as his LinkedIn page and law enforcement sources confirmed to the Post investigators have Facebook posting they are examining.

Rodger killed six people near the campus of University of California, Santa Barbara in 2014. He claimed the massacre was due his status as a virgin and wanted to take revenge on his sexually active peers.

The terms “Chad” and “Stacy” was coined by online communities to refer to men and women who belong to a more “bland” society and partake in sexual activities.