President Donald Trump confirmed the existence of the probe on social media, saying the city is “under serious investigation.”

The inquiry into whether data was manipulated to make crime rates seem lower is being run out of the office of the U.S. Attorney for D.C., Jeanine Pirro.

WASHINGTON (AP) — The Justice Department has opened an investigation into whether police officials in Washington, D.C., have falsified crime data, according to a person familiar with the probe who wasn’t authorized to publicly discuss an open investigation.