From [HERE] and [HERE] The US Department of Justice and embattled mayor Rahm Emanuel are under mounting pressure to investigate allegations of what one politician called “CIA or Gestapo tactics” at a secretive Chicago police facility exposed by the Guardian.

Politicians and civil-rights groups across the US expressed shock upon hearing descriptions of off-the-books interrogation at Homan Square, the Chicago warehouse that multiple lawyers and one shackled-up protester likened to a US counter-terrorist black site in a Guardian investigation published this week.

As three more people came forward detailing their stories of being “held hostage” and “strapped” inside Homan Square without access to an attorney or an official public record of their detention by Chicago police, officials and activists said the allegations merited further inquiry and risked aggravating wounds over community policing and race that have reached as high as the White House.

Caught in the swirl of questions around the complex – still active on Wednesday – was Emanuel, the former chief of staff to Barack Obama who is suddenly facing a mayoral runoff election after failing to win a majority in a contest that has seen debate over police tactics take a central role.

Emanuel’s office refused multiple requests for comment from the Guardian on Wednesday, referring a reporter to an unspecific denial from the Chicago police.

The Guardian reported on Tuesday that police in Chicago detain suspects at Homan Square without booking them, thereby preventing their relatives and lawyers from knowing their whereabouts, reminiscent in the eyes of some lawyers and civil-rights activists of a CIA black site.

While people are held at Homan Square, which lawyers described as a process that often lasted between 12 and 24 hours, several attorneys said they had been refused access to the facility, and described entrance to it as a rare occurrence. One man interviewed by the Guardian said that ahead of a Nato protest in 2012, he was handcuffed to a bar behind bench for 17 hours inside Homan Square and refused a phone call before police finally permitted him to see his attorney.

In an interview Wednesday, another Nato protester, Vic Suter, offered a similar account of close shackling and an estimated 18 hours without access to an attorney.

“You are just kind of held hostage,” Suter told the Guardian. “The inability to see a lawyer is a drastic departure from what we consider our constitutional rights. Not being able to have that phone call, the lack of booking, makes it so that when you’re there, you understand that no one knows where you are.”

A third person, Kory Wright, came forward to the Intercept in a story published Thursday. He described spending six hours at Homan Square without being booked or having access to a lawyer, as well as being zip-tied to a bench “like a cross” - in an intentionally overheated room without access to water or a bathroom, eventually giving false statements to try and end his ordeal. [MORE]

Wright’s friend, Deandre Hutcherson, told the Intercept that he, too, was held at the facility, without either of the men being read their Miranda rights.

Boykin, the county commissioner, looked up at the warehouse and said that a potential US justice department investigation would be “an extension of reform – making sure people’s basic rights are not violated but that they have opportunity to counsel”.

“It’s one thing to quell demonstration and protests,” Boykin said, “but it’s another thing to use antiquated Gestapo tactics that are more commonly found in parts of the underdeveloped world or in places like China or Russia.”

“Not in America.”

Obama’s task force on improving police relations in the wake of the shooting of the unarmed teenager Michael Brown six months ago in Ferguson, Missouri, was expected to release its first set of recommendations on community policing as soon as Monday. The third anniversary of the killing of unarmed teenager teenager Trayvon Martin is Thursday, two days after a Department of Justice civil-rights investigation brought no charges against George Zimmerman, the neighbourhood watchman who shot him dead.

Scott Waguespack, the alderman of Chicago’s 32nd ward, said he, too, was unaware of potential abuses at the Homan Square warehouse until he read the Guardian’s investigation this week. During the 2012 Nato summit, he said, Chicago police officials told local politicians that arrestees would end up bussed to the department’s Belmont district precinct on the city’s West Side, and not Homan. “That’s where we assumed they went,” he told a third Guardian reporter.

Waguespack claimed meaningful police reform has stalled under Emanuel, citing the mayor’s failure to pass a city ordinance designed to enforce more oversight to the controversial police oversight board, as well as inconsistencies in crime statistics.

The alderman said the “best thing” that the “next mayor” of Chicago could do about the Homan Square allegations was bring in federal investigators: “Then the civil rights division of the justice department can say: ‘Here’s how we scrutinized it’.”

The Guardian sent a list of detailed questions about Homan Square to Emanuel’s office on Wednesday. A spokesman for the mayor referred a fourth reporter to a Chicago police department statement issued to multiple media outlets on Tuesday, and declined to return multiple calls seeking clarification.

“If lawyers have a client detained at Homan Square, just like any other facility, they are allowed to speak to and visit them,” the statement reads, without elaborating on when those meetings take place. “There are always records of anyone who is arrested by CPD, and this is not any different at Homan Square,” the statement continues, without addressing specifics as to how or when those records are logged.

Amnesty International USA has called for the mayor to open his own “independent and impartial investigation” into the Homan Square facility, with the human-rights group requesting “unrestricted access” to the site.

In a letter to Emanuel, Amnesty USA’s executive director Steven Hawkins wrote: “As the mayor of Chicago, you have a responsibility under US and international law to ensure that human rights violations are not committed within the city.”

The group lobbied Emanuel during the mayoral campaign to commit to a program of reparations for victims of abuse between 1972 and 1991 at the hands Jon Burge, the notorious former Chicago police commander who was released from home custody this month.

Emanuel has not made a financial commitment to reparations but has promised a route to “closure” for the surviving victims.

“It is his responsibility as the mayor of Chicago, as a public figure to make sure that his city is complying with international law,” Amnesty USA’s senior campaigner, Jasmine Heiss, told the Guardian. “Because without a clear commitment to addressing things like police torture, it gives torturers the go ahead to continue to undermine the rule of law and ignore international guidelines.”

A representative for the Chicago branch of the American Civil Liberties Union said the group was gathering facts about Homan Square as well.

Jesús “Chuy” Garcia, the county commissioner challenging Emanuel in an April runoff vote that local political watchers warned could become a national “free-for-all”, did not respond to multiple requests for comment after a separate Guardian interview on Monday. But his colleague, Boykin, said the mayor had an obligation to find more answers. “Fifty-plus percent of the people voted against the mayor yesterday,” Boykin said outside Homan Square. “I think the mayor has a problem.”