Citibank confirmed its app was experiencing technical issues on Wednesday after hundreds of Citibank customers reported receiving fraud alerts and difficulties accessing their accounts.

According to Down Detector, a service that tracks outages, hundreds of Citibank users began flagging issues around 9 a.m. ET. Citibank was “aware of the issue” and “working to fix it,” the bank wrote on X in response to customer complaints.

Meanwhile, Citibank customers have taken to X to share that the bank’s mobile was app was “down” and were unable to reach customer service representatives. Other users reported receiving a fraud alert from the bank.

“We are experiencing some technical issues with Citi’s mobile app experience, which we are working quickly to resolve,” Citibank said in a statement obtained by USA TODAY. “For servicing needs during this time, customers can still log in at Citi.com or call the number on the back of their cards or on their monthly statement.”

Last year, a widespread outage affected JPMorgan Chase ATMs.

This is a developing story, check back later for updates.