New York City Mayor Eric Adams has been indicted by a federal grand jury, sources familiar with the matter told ABC News.

In a speech addressed to New Yorkers on Wednesday, Adams vowed to fight what he called the “entirely false” indictment with “every ounce of my strength and my spirit.”

“I always knew that If I stood my ground for all of you that I would be a target – and a target I became,” Adams said.

Adams is the city’s first sitting mayor to be indicted.

The exact charges remain sealed as of Wednesday night, but the initial investigation expanded from campaign finance to bid-rigging and more, sources said.