CHICAGO — More than 100 Protesters gathered outside the Chicago Police Homan Square facility  Saturday in response to a series of articles from the British newspaper, The Guardian.

The paper reports that the nondescript building at Fillmore and Homan on the city’s West Side is used as an alleged “off the books interrogation facility” where people “disappear” and have been beaten by police and denied access to attorneys, among other allegations. The Guardian also detailed claims against a former Chicago Police detective with ties to Guantanamo Bay.

Protesters are demanding an independent investigation into what happens at the facility.

A spokesperson for Chicago Police denied the allegations in this statement released earlier this week:

“CPD abides by all laws, rules and guidelines pertaining to any interviews of suspects or witnesses, at Homan Square or any other CPD facility. If lawyers have a client detained at Homan Square, just like any other facility, they are allowed to speak to and visit them. It also houses CPD’s Evidence Recovered Property Section, where the public is able to claim inventoried property. There are always records of anyone who is arrested by CPD, and this is not any different at Homan Square.”