DETROIT (AP) — The Justice Department is probing allegations that Uber used phony software to thwart city officials looking at whether the ride-hailing company was following local regulations.

The city of Portland, Oregon, said in an April audit report that it was notified of the federal inquiry by the U.S. Attorney's Office in San Francisco. Portland says it is cooperating. Uber and the U.S. Attorney's Office both declined to comment.

Reuters and other news outlets have reported that the investigation is a criminal probe currently before a grand jury.

GREYBALLING THE OVERSEERS

Uber's software...