The Ogdensburg Police Department says they're investigating the death of a patient at the St. Lawrence Psychiatric Center after an incident over the weekend.
Police described the incident as a "physical altercation." Several hours after the incident, one of the patients had passed.
The investigation was opened up Sunday morning at 3 a.m.
"It is unknown, at this point in time, if the death can be attributed to the physical altercation," the department said in a release.
An autopsy is planned to determine the cause of death, and the investigation is ongoing.
Police are not releasing any names until the victim's family is notified.