Users on the anonymous message board site 4chan shared links to a livestream of a mass shooting at a German synagogue nearly 300 times after the shooter reportedly made references to the chans in his video and manifesto, according to a review by Media Matters.

On October 9, a gunman killed two people and wounded two others outside a synagogue in Halle, Germany. The alleged shooter uploaded video of the attack to the livestream platform Twitch, from where it was shared by multiple channels on the Telegram messaging app. White nationalists on Telegram applauded the shooting and video, during which the alleged shooter complained about feminism and declining birth rates and claimed, “The root of all these problems is the Jew.” (One white nationalist channel even urged its followers to target the CEO of the Anti-Defamation League after he condemned the shooting.)

During the livestream, the alleged shooter also called himself “Anon,” seemingly a reference to a term used by the anonymous users of 4chan and 8chan to describe themselves. According to The New York Times, the reported manifesto was written in English “to draw the attention of an audience wider than just other extremists in Germany,” and it also referenced a specific 8chan employee.

A Media Matters search of 4chan found nearly 300 links shared to variations of the livestream, including about a dozen links to a livestream on Twitch and the alleged shooter’s Twitch account, nearly 50 links to the livestream uploaded to video sharing website LiveLeak, more than 170 links to hosting service BitChute, a link to harassment message board site Kiwi Farms, and more than 60 links to an upload of the alleged shooter’s video on a site that describes itself as “the world's leading censorship-free gore site.”

Alongside sharing versions of the livestream countless times, some users on 4chan “/pol/”’s message board praised the alleged shooter, calling him a “fucking legend” and a “German crusader” whose shooting was “hot as fuck” and proof that “we are making progress” and “have the power to kill [in real life].” Some users were more critical because of what they considered to be a “very poor score” compared to the death toll of other recent white supremacist mass shootings, although some 4chan users still praised the alleged shooter for having his “heart … in the right place,” “tying the high score,” and “making me laugh.”

Some users noted that the alleged shooter mentioned “Anon,” calling him “one of us” and a “4channer no doubt.” Another user on “/pol/” asked, “Who of you guys went to the synagogue in Halle today?”

This is not the first mass shooting linked to the chans. Multiple white supremacist mass shooters have reportedly posted their manifestos on 8chan this year, causing the site to be knocked offline. And users on 4chan have continued to call for violence against minority groups.