NYC police union head resigns after FBI raids group's offices

What they're saying: "The nature and scope of this criminal investigation has yet to be determined," the board’s letter stated, per the New York Daily News.

• "However, it is clear that President Mullins is apparently the target of the federal investigation. We have no reason to believe that any other member of the SBA is involved or targeted in this matter."

The big picture: An FBI spokesperson told AP that agents who raided the Sergeants Benevolent Association were "carrying out a law enforcement action in connection with an ongoing investigation."

• Agents also raided Mullins' home in Port Washington, Long Island.
• Mullins is undergoing a New York Police Department disciplinary proceeding for tweeting NYPD paperwork in 2020 about the arrest of Mayor Bill de Blasio's daughter during protests over George Floyd's murder, AP notes.

Context: The Sergeants Benevolent Association represents some 13,000 New York active and retired police sergeants.

• The union did not immediately respond to Axios' request for comment.

Editor's note: This article has been updated to reflect reports of Mullins' resignation.