Columbia University has balked at an NYPD request to use rooftops on campus as locations for sensors capable of detecting gunfire in the city.
The Ivy League school gave no reason why it declined to allow the police department to install the ShotSpotter technology on campus, sources told NBC 4 New York.
University administrators will continue to review the proposal, however.
Police officials say ShotSpotter often picks up gunfire that is never reported in a 911 call. They add that the technology enables officers to respond to gunfire faster than a 911 call.
Installing the sensors on campus would help the department combat gang violence in the public housing complexes near the university, officials say.