PHOENIX (AP) — Phoenix police say they're investigating a hit-and-run vehicle accident involving state Attorney General Tom Horne.

But Horne said Monday that he backed into someone's bumper and it's not really a hit-and-run case.

Maricopa County Attorney Bill Montgomery won't provide details other than an FBI investigation into campaign finance matters involving Horne unearthed information about a hit-and-run accident.

Phoenix police confirm they're investigating a March 27 hit-and-run collision involving Horne. They say nobody was injured in the accident that occurred near downtown and their investigation continues.

Horne said he was "backing out of a parking space" and he "backed into someone else's bumper."

He says he didn't see any damage and didn't leave his name and number. Horne says he later contacted Montgomery's office about it and never heard back.