CLEVELAND — Cleveland officials said city services at City Hall won't be available to the public Thursday or Friday after the building reopened on Wednesday following a cyber incident. 

City officials said after reopening on Wednesday, they encountered "some expected challenges" with their systems. City Hall employees were allowed back into the building Wednesday to help figure out which systems weren't working, and will also be allowed back in Thursday and Friday. 

On Sunday, officials first acknowledged their was a "cyber incident," in which the nature of hasn't been disclosed due to an ongoing investigation. The incident closed down City Hall Monday and Tuesday. 

Residents are encouraged to either call 311 for more information or use online services in the meantime. 

"We ask for the public’s patience as the city continues its effort to restore system access and broadly recover from the incident in a safe and strategic manner," the city said in a statement. "Due to the nature of the city investigation, we cannot provide additional details at this time. We will continue to provide regular updates as they become available."