Federal authorities in New York City say three people have been charged in the largest theft of consumer data from a U.S. financial institution in history.

Authorities say the probe resulted from a huge cyberattack against JPMorgan Chase, the nation’s biggest bank by assets. They say there were also attacks against several other financial institutions, financial services corporations and financial news publishers. Federal prosecutors say the cyberthieves stole the personal information of more than 100 million customers of the companies.

An indictment unsealed Tuesday in Manhattan federal court says the computer hacking crimes were carried out from 2012 to the middle of this past summer.

U.S. Attorney Preet Bharara plans to discuss more about the case at a news conference.

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