Targetgeddon? That's what some customers were saying as they waited in long lines for Target's cash registers to come back online. The company experienced a cash register outage at many locations across the country Saturday afternoon.

The system glitch affected the payment systems at Target stores nationwide. The outage caused checkout aisles to become clogged and sent customers into a social media frenzy.

Target acknowledged the problem on Twitter, saying:

Target employees were working to service customers manually. There were reports of long lines and frustrated customers.

"We are aware of a systems issue in store and are working as quickly as possible to get this fixed," the official Target account replied to a Twitter user. "Thank you for your patience!"

Later Saturday, the company said in a statement that its registers were "fully back online" and that customers were able to purchase merchandise again in all stores.

"The temporary outage earlier today was the result of an internal technology issue that lasted for approximately two hours," Target said in the statement. "Our technology team worked to quickly identify and fix the issue, and we apologize for the inconvenience and frustration this caused for our guests."

Target said it could confirm that this was "not a data breach or security-related issue, and no guest information was compromised at any time."

Customers posted their frustration on Twitter, some leaving the store empty-handed.