It's how they refer to the Office of Inspector General instead of repeating themselves.

>In the fall, an inspector general report accused Blanton of abuse of government property and wasting taxpayer dollars by allowing his family to drive a government-owned vehicle and taking the vehicle on out-of-town trips to South Carolina and Florida, according to the report. The federal watchdog also accused Blanton, who was appointed by former President Donald Trump, of ethics violations over an offer to provide tours to “patriots” weeks before the November 2020 election.

On top of providing clarity in the sense that it somewhat explains what the inspector general does, restating like this can help keep readers from becoming disengaged due to repetitious writing. The issue here is that the headline buries the lede and tries to drum up minor controversy.