Officials said the cyber incident did not affect Anne Arundel County Public Schools or Anne Arundel County Public Library, which will operate normally.
However, county employees should plan to work remotely using Google or Internet-based systems. Emergency and essential workers are expected to report as usual.
According to the county's website, Senior Activity Centers will be open, but AARP tax preparation is closed as are the two customer service centers for the Department of Aging and Disabilities.
The county's recycling center and its landfill will be closed. However, curbside collections will follow scheduled times.
Regional parks and amenities of the Department of Recreation and Parks will be open.
At 10:15 a.m. Saturday, the county's government posted that some of its public services were down but that both 911 and 311 remained operational.
In an update posted around 5 p.m., the county identified that its Office of Information Technology, public safety officials and cybersecurity experts were working to investigate an "ongoing cyber incident of external origin" that was affecting county services.
County officials said they are taking a "proactive approach" to ensure the systems are safe. A post on X from the county government noted that precautionary measures included limiting access to the Internet until the county government is able to return to full operations.
County officials do not have a timeline for when full service will be restored but said they would continue to provide updates on the situation via social media.
The county did not respond to question of which services were impacted and whether this could be considered a cyber attack.
Sunday evening, some services on the county's website, like the portal for paying water and utility bills, had long load times and eventually sent "server error" and "runtime error" messages to users.
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