The state of Nevada was the target of a cyberattack that took down state websites and services and forced thousands of state employees home this week, Gov. Joe Lombardo's office confirmed Tuesday evening.

In a memo released to the media, the governor’s office disclosed news of the cyberattack for the first time since the state identified a "network security incident” Sunday morning. 

The governor’s office is not disclosing the “technical details” of the incident, citing a Nevada law that protects the confidentiality of information related to homeland security whose disclosure would “create a substantial likelihood of threatening the safety of the general public.”

The attack has resulted in many state websites and phone lines not being operational since Sunday morning. State offices have been closed because of the attack, but in-person services are set to resume later this week, the governor’s office said in the memo.

The office added that there was no evidence personal information had been compromised, and the attack also did not affect state payroll.