The widespread IT outage in Fulton County, Georgia, has been blamed on a cyberattack.

Providing a second update, the county revealed that the incident is under active investigation by law enforcement agencies.

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The major outage was first flagged on January 29, with local officials noting that Fulton County VoIP phone systems have been affected, meaning many offices were unable to accept phone calls.

As of today (February 1) phone lines are still down at most offices, according to the county.

The outage has also impacted some other services including the Fulton County justice system. Some court transactions are currently unavailable, including e-filing and access to online records.

"The Fulton County Sheriff’s Office is currently relying on backup (paper) processes for detainee processing," stated the county.

Fulton's 911 system is operational for all members of the public served by the center, it revealed.

However, the Fulton County Police Department is unable to issue police reports at this time, while Fulton County elections offices are temporarily closed.

"There is no evidence at this time that personally identifiable information has been exposed during this incident," the statement said. "However, the investigation is ongoing and is being examined carefully."

Officials are "working around the clock to restore services safely," it added.