NAPA, Calif. (AP) - A patient at Napa State Hospital has been arrested in connection with an assault that left an employee injured.

      Hospital spokeswoman Deborah Moore announced the arrest on Wednesday, a day after the assault. She did not release the patient's name or provide details about the incident although she did say the staff member was treated at a local hospital.

      A union representative tells the Napa Valley Register the employee - a psychiatric technician - was injured while staff members were placing a patient in a restraint.

      Brad Leggs of the psychiatric technicians' union says the incident occurred in an area housing non-criminal patients.

      Napa State has been roiled in recent years by patient attacks on staff members, among them the strangling of a psychiatric technician in October 2010.

      (Copyright 2012 by The Associated Press.  All Rights Reserved.)