Chicago Police Interim Superintendent Charlie Beck joined officers for his first press conference about police's undercover sting Tuesday morning. Police said weapons and drugs are routinely sold on the social media site using secret groups that are unsearchable.
"CPD has been able to infiltrate seven of these groups in the latest operation, resulting in 147 undercover buys," said First Deputy Superintendent Anthony Riccio.
Police showed pictures and videos of guns they were able to confiscate during the sting operation, including automatic weapons. According to Riccio, Organized Crime detectives have been digitally going undercover by posing as criminals looking to buy illegal guns and drugs sold in private or invisible Facebook groups.
Officers were able to use real confidential informants who would vouch for a detective posing as a gang member in the group, he said.
The parties would then complete the purchase in person and officers would make an arrest.
WATCH: CPD shares results of 'Operation FaceBOOKED' undercover sting
CPD's top brass said Facebook is harboring criminals because they aren't doing enough to close the private groups down. Officers also said Facebook is making these operations difficult for undercover detectives by shutting down their fake accounts.
"All it would take is allowing us and other law enforcement agencies to work with Facebook, just like we work with neighborhoods or businesses to stop the sales of illegal guns," said Interim Supt. Beck.
Facebook policy states that police, like everyone else, are required to use real names on Facebook.
"People who are doing illegal acts under their own identities, Facebook doesn't shut them down, but when they find out officers are operating undercover with covert identities Facebook will shut those officers down," Riccio said.
In a written response to CPD complaints, Facebook company spokesperson Sarah Pollack said in part, "We remove content and accounts that violate our policy and catch over 97% of drug sale content and 93% of the firearms sales content." But, CPD insists there are many more illegal sales going undetected on hidden Facebook groups.
"The truth is Facebook is harboring criminals, criminals know how to use the privacy Facebook affords them," Riccio said.
RELATED: More than 10,000 illegal guns have been recovered by police this year, CPD says
Last week, Chicago police announced that more than 10,000 illegal guns have been taken off city streets so far this year. That's equivalent to roughly one gun taken off the street every 48 minutes.
INTERIM SUPT. CHARLIE BECK ADDRESSES LEADERSHIP TRANSITION
WATCH: Interim Supt. talks CPD transition
One day after Supt. Eddie Johnson was fired by Mayor Lori Lightfoot, interim Supt. Charlie Beck said that he believes accountability is key when being a police officer.
"None of us are perfect, we have to live with our errors," Beck said.
Beck, whom Lightfoot appointed last month, didn't speak for long at Tuesday's press conference, but said he wanted to ensure members of CPD that this would continue to be a smooth transition for leadership.
"This is not at all how I envisioned the transition, but, this will not deter the transition," said Beck. "Superintendent Johnson and I will still talk, we have talked and he has the best interest for this city."
Beck sent a letter to CPD officers saying in part he realizes "Johnson's firing probably caused a great deal of unease but the Department is strong and headed in the right direction". Beck's letter also praised CPD for a "crime strategy that has delivered nearly a 40% percent drop in gun violence over the last four years" while acknowledging there is still a tremendous amount of work ahead.
"I believe I have some things I could bring to the table from a different perspective having policed another city for a very long time," said Beck. "But that is not to take away from the success that this department has had."
"I know that superintendent Johnson would want a smooth transition, and that's what I'm looking for also," he added.
READ: Interim Superintendent Charlie Beck's message to CPD:
I wanted to take a moment to reach out to the sworn and civilian members of the Chicago Police Department this morning to let you know that it is an honor and a privilege to have this opportunity to serve as your Interim Police Superintendent. I know that the events of this morning likely caused a great deal of unease, but rest assured this Department is stable, strong, and headed in the right direction.
I served as a police officer for more than 40 years in Los Angeles, and was their Police Chief for nine of those years. I come from a police family. My father came to the Los Angeles Police Department in the 1950s, and all three of my kids are on the job in LA today.
I understand and respect what it is that you do each and every day in serving the public, and I intend to do everything in my interim capacity to support you and that work.
Over the last few years, the progress that you have made here in Chicago is impressive and is a testament to each one of you. In 2016, as America watched this city, you all could have gone in a direction like many other cities. But instead, you developed a crime strategy that has delivered a nearly 40% drop in gun violence in four years. You have embraced community partnership and constitutional policing by implementing a series of reforms and supports that are collaborative as opposed to punitive.
There is still a tremendous amount of work ahead and we will need to manage through our current challenges, but I am incredibly thankful and proud to be here to help us move forward.
Over the next several weeks I will continue visiting Police Districts and Areas, and I look forward to meeting many of you in person. I believe in each of you and your collective capacity to continue to move this Department forward and keep this city safe.
See you out there.
Interim Superintendent of Police