The FBI is working with the City of Atlanta to determine what is causing problems on the city’s computer network.

“The City of Atlanta is currently experiencing outages on various internal and customer facing applications, including some applications that customers use to pay bills or access court-related information,” a city spokesperson said. “We are confident that our team of technology professionals will be able to restore applications soon. Our City website, Atlantaga.gov, remains accessible and we will provide updates as we receive them.”

The spokesperson would not confirm reports that a hacker had demanded payment in return for unlocking the system.

“We are currently investigating,” the city spokesperson said.

Channel 2 Action News obtained an internal memo from the Atlanta Police Department informing employees that payroll payments might be affected.

“The city network has been compromised,” the statement said. “If you have not already, please unplug your Ethernet cable from your desktop in an effort to prevent possible corruption, but the damage may already have been done. Unfortunately, this may affect payroll. Please let everyone know that this problem is being aggressively addressed.”

Channel 2 Action News’ Mark Winne confirmed with FBI spokesman Kevin Rowson that they agency is coordinating with the city.