A DeKalb man faces almost a dozen felony charges after police said he uploaded multiple videos and a photo depicting child sexual abuse to the social media site X, formerly known as Twitter, court records show.

Authorities began investigating Charyan K. Johnson, 23, on July 8 after receiving a tip from the Illinois Attorney General’s Internal Crimes Against Children Task Force. The task force passed along cyber tips to the DeKalb County Sheriff’s Office initially flagged through the National Center for Missing and Exploited Children, according to DeKalb County court records filed Sept. 9.

Johnson was charged Sept. 9 with 11 counts of disseminating, possessing or reproducing materials depicting child sexual abuse, including eight Class X felony charges, records show.

If convicted, he could face up to 30 years in prison.

The DeKalb County State’s Attorney’s Office filed a petition Sept. 13 to deny Johnson’s pretrial release. Circuit Court Judge Philip Montgomery ordered him released but with stipulations including that he be prohibited from accessing the internet and placed on a GPS home-monitoring device, records show. Johnson is represented by the DeKalb County Public Defender’s Office.

Investigators tracked IP addresses and a phone number related to two X accounts to Johnson. A warrant search of the social media accounts showed eight video files and one photo had been posted to Johnson’s two X accounts, police alleged in court records.

Authorities also searched Johnson’s person, vehicle and home on Sept. 3. Police interviewed Johnson, who told police his cellphone number and email address, which were the same ones used in the alleged illegal postings, according to court records.

Johnson told police that he had previously viewed child sex abuse materials on X. He denied using the two X accounts under investigation and denied disseminating material on them himself, according to court records.

But police said when they searched his cellphone, they found the same X account names saved to his phone settings, and two videos depicting child sexual abuse on the phone, including one that had been flagged in the initial cyber tip report, records show.

His next court appearance is at 2 p.m. Oct. 30 in front of Circuit Court Judge Joseph Pedersen.