MARTA accidentally mailed the personal information of 785 employees to incorrect addresses due to an “equipment malfunction,” the transportation agency reported Thursday.

On June 8, during enrollment for critical care insurance for the roughly 785 MARTA employees, a mechanical malfunction occurred during the mail merge, which resulted in personal information -- such as date of birth and Social Security numbers -- being mailed to the incorrect addressees.

MARTA discovered the mistake June 12 and notified affected employees on June 16.

It also provided affected employees with free credit monitoring from Equifax Inc. for one year and trained and/or re-trained employees responsible for information distribution