The shutdown-Rikers movement was trigged in part by the suicide of Kalief Browder, a teenager from the Bronx, who was wrongfully jailed for three years.
Browder, 22, was arrested shortly before his 17th birthday on May 15, 2010. He was charged with stealing a backpack but insisted he was innocent.
The case was never brought to trial and Browder was finally released from jail after three years — two of those years were in solitary confinement.
Browder used an air conditioning cord and bed sheets to hang himself in June 2015.
Rapper Jay Z, who briefly met Browder after he read about his plight in a New Yorker piece, produced a six-part documentary about the young man’s life.
The jail houses about 10,000 detainees, about 80% of whom are awaiting trial.
Thursday’s City Hall powwow came on the same day as a Board of Correction meeting where the latest violence in city jails was discussed.
Correction department brass asked the board to keep several jails on continued lockdown due to recent slashings.
Overall, slashings in city jails increased from 131 in 2015 to 155 in 2016, records show.
The spike in those attacks comes as de Blasio has earmarked over $200 million to pay for everything from added correction officers to extra classes for inmates.
The commission report does not include any specific locations for where the new jails should be located, according to a source familiar with the review.
De Blasio has called the idea a noble cause but has repeatedly declined to support it.
In 2015, the city quietly looked at the possibility, and even identified multiple locations for the more than $10 billion plan.
Mark-Viverito has called for the jail to be shut down, an idea supported by Gov. Cuomo.
De Blasio has hired consultants to make recommendations on how to transform the jail.