In a bank named "The Santa Anna National Bank" in Texas, the government officially shut it down. This bank had major financial problems and there were suspicions that people inside the bank did improper things, such as embezzlement or forgery.
What happened is that an institution called the FDIC, which is responsible for securing money in banks, took over the bank after it was closed. They transferred people's deposits (the money they had in the bank) to another bank called "Coleman County State Bank", meaning that people who had deposited their money there would be able to withdraw it normally from the new bank.
This bank had assets of about 64 million dollars and deposits of around 54 million. However, part of the money is not insured, meaning not everything will be returned to the people. This institution will lose about 24 million dollars because of the closure of this bank.
So, what is happening with the other banks in America?
The truth is that there is a big problem growing in the banking system there. Banks have unrealized losses (meaning they are losing on paper, but have not yet sold these assets) of nearly half a trillion dollars! This is because they bought government bonds a long time ago at low interest rates, and when interest rates rose, the value of these bonds dropped significantly.
There are about 500 banks in America with very little capital, and if the situation worsens further, they could go bankrupt. Also, many banks have taken huge loans on commercial real estate (like malls and offices), and if this market collapses, these banks will be in trouble and we might see a wave of bankruptcies.