New Orleans city government computers were shut down on Friday and the mayor declared a state of emergency after a cyberattack.
Ransomware was detected on the city computers, forcing them to take all of their computers offline and close city offices. Nola.gov was still down on Saturday morning.
The city found no sign that any passwords were compromised or data lost in the attack, Nola.com reported. City workers did receive a large number of suspicious emails.
The FBI, the Secret Service, and National Guard are working with city and Louisiana state investigators. Public safety services are still up and running, a spokesman said.