NYC attorney general is investigating Twitch, Discord, and 4Chan over the Buffalo shooting

• New York City's attorney general is launching an investigation into Twitch, Discord, and 4Chan.
• AG Letitia James said the probe was in connection with the Buffalo, New York shooting, which left ten dead.

New York Attorney General Letitia James announced Wednesday she's launching an investigation into various platforms used by a suspected shooter who launched a racially motivated attack at a supermarket Buffalo, New York.

James specifically named Twitch, Discord, 4Chan, and 8Chan as subjects of her investigation, and said the shooter used them to "plan, promote, and stream" his attack.

An 18-year-old white man named Peyton Gendron was charged with first-degree murder in connection with the shooting on the same day as the shooting. He has pleaded not guilty.

Ten people were killed during the attack and three more were injured — and 11 out of the 13 people shot were Black.

"This terror attack again revealed the depths and dangers of these platforms that spread and promote hate without consequence," James said in a tweet.

Amazon-owned Twitch is a streaming service which the attacker used to broadcast the attack live. Twitch confirmed the shooting was streamed on its platform, and a spokesperson told CNN the livestream was taken down less than two minutes after the attack began.

Bloomberg reported the Buffalo shooter discussed details of his plans on chat service Discord.

A Discord spokesperson told The Verge "will cooperate" with the investigation, and added the suspect's Discord server was private until about 30 minutes before the attack, at which point it was shared with a "small group" of other people.

"We are continuing to do everything we can to assist law enforcement and the investigation remains ongoing," Discord's spokesperson told The Verge.

A 180-page white supremacist manifesto seen by Insider purportedly written the shooter claimed he had been in part been radicalized on message-board site 4Chan.

CNN reported anonymous users on 4Chan discussed ways of circulating recordings of the Buffalo shooter's video across different parts of the web.

8Chan, which was renamed 8Kun in 2019, is a site similar to 4Chan which has been taken offline in the past after being linked to multiple mass shootings.

The suspected shooter's online behavior and livestream of the attack have drawn comparisons with the 2019 attack on two mosques in Christchurch, New Zealand. The Christchurch shooter livestreamed his attack on Facebook.

Twitch, Discord, and 4Chan did not immediately respond when contacted by Insider about AG James' investigation. Insider could not find a contact for 8Chan.