Users of Bank of America in Los Angeles and locations across the U.S. reported difficulty accessing mobile and online bank accounts on Wednesday.

After logging in, some users received a message indicating that some accounts and balances were temporarily unavailable. Several customers left comments on Bank of America’s Facebook page saying they were having trouble accessing their accounts.

Some reported seeing zero balances.

The website DownDetector reported a dramatic spike in the number of outages on Wednesday morning. The outage registration site received tens of thousands of outage reports from users by mid-morning.

Issues were also reported by users in New York, Chicago, Seattle and cities.

NBCLA has contacted Bank of America for comment. Details about the cause of the outage were not immediately available.