That's what they're saying now, but apparently, an app was developed that allowed police to create a watch list of suspects, upload their picture, and use the cameras to constantly scan for the images. When they got a hit, police received a direct notification via the app

Apparently much of this wasn't documented, but for whatever reason, the police captain decided in April to end it for the time being, so now it's back to the company notifying police, but they want city council to pass an ordinance so they can go back to police being directly notified

https://wp.api.aclu.org/press-releases/208236

After the Washington Post began investigating this time around, city officials acknowledged the program and said they had “paused” it and that they “are in discussions with the city council” to change the city’s facial recognition technology law to permit this pervasive monitoring.

The ACLU is now urging the New Orleans City Council to launch a full investigation and reimpose a moratorium on facial recognition use until robust privacy protections, due process safeguards, and accountability measures are in place.

“Until now, no American police department has been willing to risk the massive public blowback from using such a brazen face recognition surveillance system,” said Nathan Freed Wessler, deputy director of ACLU’s Speech, Privacy, and Technology Project. “By adopting this system–in secret, without safeguards, and at tremendous threat to our privacy and security–the City of New Orleans has crossed a thick red line. This is the stuff of authoritarian surveillance states, and has no place in American policing.”