By MATT O’BRIEN and HALELUYA HADERO
PROVIDENCE, R.I. (AP) — The chatting app Discord is one of the most popular ways gamers communicate online. Now it finds itself at the center of an investigation into the leak of classified documents about the war in Ukraine. The investigation is unfolding as Discord makes an ambitious push to recruit more users and expand the way they use the versatile app. Discord said it is cooperating with law enforcement in the investigation of the leak, which is believed to have started on the site. A Massachusetts Air National Guard member reportedly posted on Discord for years. According to some who chatted with him, his activity included posts about closely guarded U.S. secrets.