City police called the school district as a precautionary measure because the disgruntled person has children in the district. The lockout was lifted 28 minutes later.

All school buildings in the Canandaigua City School District went into lockout mode for 28 minutes Thursday morning after receiving a report from the Canandaigua City Police Department of a disgruntled resident who is a parent with children in the district.

Superintendent Jamie Farr posted a statement to the district's website, saying the lockout was in effect from 10:53 a.m. to 11:21 a.m. when police informed him their concerns were resolved and any potential safety issues had ended.

Farr says police did not believe the resident was angry with the schools, but contacted the district as a precaution. Police also went to all school campuses to increase security at each location.

Farr explained a lockout is when all exteriors doors are secured against entry from anyone outside the school. No students are allowed outside of any building, but schedules and activities within each building continue without interruption.