CHARLESTON — Widespread internet outages were reported by multiple broadband providers throughout the Charleston area Sept. 30, especially by customers of AT&T.

The issue was blamed on damage to a fiber line caused by a third-party provider.

As of 5:30 p.m. it was unclear when service would be restored.

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Utility workers install overhead fiber-optic lines. File/AP

Outage maps show that AT&T internet, digital phone and U-verse TV offerings were out for likely thousands of customers in areas that included nearly all of the Charleston peninsula north of Broad Street; much of James Island and Mount Pleasant; parts of North Charleston, including an area near Charleston International Airport; and West Ashley near Citadel Mall and portions of Johns Island off Main Road.

“We’re aware of a broadband issue affecting some customers in the Charleston area due to fiber cuts in a third-party’s network. We’re actively communicating with this provider to resolve the issue so that service can be restored as quickly as possible,” an AT&T spokesperson said in a written statement. “We understand how important these services are and appreciate the patience of our customers.”

A large orange triangle appeared on AT&T’s online outage map around 3:30 p.m., showing South Carolina and four other states were affected: Georgia, Tennessee, Kentucky and Alabama.

By 5 p.m. just South Carolina and North Carolina were shown with outages.

Other providers said the fiber-line damage extended beyond AT&T and was disrupting their customers as well.

WideOpenWest Inc., or WOW, a smaller internet provider that serves parts of the Charleston region, reported some of its local subscribers were offline.

“We are aware of a fiber cut that is affecting multiple internet service providers in the area,” said Debra Havins, vice president of corporate communications. “(Our) teams are actively working to restore services to our customers. At this time, I don’t have an estimated time for restoration of services.”

An Xfinity online map showed a small outage among customers in Mount Pleasant near Interstate 526 Tuesday afternoon.

The last local major broadband outage caused by a cut line was in 2019.