JPMorgan is the chief victim in the largest theft of customer data from a financial institution in US history

JPMorgan is the chief victim in one of the biggest bank breaches in history.

US attorney Preet Bharara has charged three people in connection to the largest theft of customer data on a financial institution in US history.

The charges were "related to the computer hacking of several financial institutions, financial news publishers, and other companies, including the largest theft of customer data from a U.S. financial institution in history," according to a statement from United States Attorney Southern District of New York.

JPMorgan spokesperson Patricia Wexler confirmed to Business Insider that that bank was a victim.

"We appreciate the strong partnership with law enforcement in bringing the criminals to justice. As we did here, we continue to cooperate with law enforcement in fighting cybercrime," Wexler said.

The people charged "orchestrated massive computer hacking crimes" from approximately 2012 to mid-2015, according to the indictment.

Bharara will explain the charges in a press conference at Tuesday at 1 pm EST.

Last month, Dow Jones, which publishes The Wall Street Journal and Barron's, said that hackers had intruded, seeking contact and payment information for some 3,500 customers.

It is unclear whether that incident is related to Tuesday's news.