Customers of Wells Fargo on Thursday reported an outage affecting the big bank's ATMs as well as online and mobile banking.

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KULR-TV in Montana is reporting that a bank employee said the outage is a result of a fire at a server farm located in Shoreview, Minnesota. As a result of the fire the servers had to be shut down, the bank employee reportedly said.

A customer service representative reportedly said it is a nationwide outage.

Wells Fargo in a tweet said:

Customers who have tried to access Wells Fargo online get a message about technical issues.

Wells Fargo issued a public statement, apologizing for the glitch.

"We’re experiencing a systems issue that is causing intermittent outages, and we’re working to restore services as soon as possible," the bank said in a statement. "We apologize for the inconvenience."

Some customers are also reporting the issue is impacting ATMs and credit cards.

Ticker Security Last Change Change % WFC WELLS FARGO & COMPANY 23.65 -0.39 -1.62%

Wells Fargo did not immediately respond to FOX Business' request for additional details.

Customers were tweeting about the outage.

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The problem reportedly began Wednesday night.

Please check back as this is a developing story.