Employees of Kern Superintendent of Schools have been alerted to a data breach at the organization, 23ABC News has learned.

In a note sent to staff members on Monday, Superintendent Christine Lizardi Frazier said the group's payroll department fell victim to a data phishing scam. A KCSOS spokesman told 23ABC the incident happened on Friday, May 6, and employees were also notified that day about the breach.

The personal information for more than 2,500 employees who were paid by KCSOS in 2015 was released, including social security numbers and gross pay.

"While social security numbers were provided, other identifying information like home address, contact information, direct deposit payroll information or information about dependents or family members was NOT included", Lizardi Frazier said in the note.

KCSOS said Bakersfield Police are investigating. Employees are also being provided free comprehensive identity theft monitoring services.