Two men and two women, believed to all be aged 18, were taken into custody by Chicago Police on Wednesday after authorities were made aware of the 30-minutes social media video.
The footage shows four black people allegedly holding a white man with special needs hostage in an apartment on the 3400 block of West Lexington on Chicago's West Side on Tuesday.
It was originally posted on Facebook Live by Brittany Herring but has since been deleted from her social media page.
://www.dailymail.co.uk/news/article-4089510/Four-people-arrested-footage-young-man-beaten-tortured-streamed-live-Facebook.html