AUSTIN (KXAN) – The Texas Department of Transportation says some personal information of employees was compromised last week due to a “security incident.”

KXAN first learned of the system breach from sources late Tuesday. The department says the breach of TxDOT’s automated administrative system was discovered Friday afternoon. The agency says “a small number of employees” personal information was potentially altered and compromised.

“TxDOT leaders have worked directly with those employees affected and are taking additional steps to protect all employees,” said TxDOT’s chief communications officer Bob Kaufman in a statement.

The security breach is under investigation.KXAN’s Brian Collister is looking into what happened and how many employees were impacted on KXAN News at 6 p.m.