WASHINGTON (CBSNewYork/AP) — Attorney General Eric Holder is resigning after heading the Justice Department for six years.

President Barack Obama will announce Holder’s departure later Thursday, according to a White House official.

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“Eric Holder served his country long and well in many different capacities,” Sen. Charles Schumer said in a statement. “I was particularly impressed at Attorney General Holder’s strong advocacy for voting rights. As nefarious forces tried to turn back the hard-won right to vote, Holder was ‘Horatius at the Bridge’ in many cases, preventing or slowing down their regressive march to take away people’s hard-earned rights.”

Holder is the first black attorney general, and his tenure is the fourth longest on the job.

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He plans to remain at the Justice Department until his successor is in place.

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