Hard drives containing some of Beyoncé's unreleased music, footage plans for future shows, and set lists have been stolen from the car of her choreographer, Christopher Grant, in Atlanta.

Two members of Beyoncé’s team said that their S.U.V. was broken into on July 8, just before a series of concerts in Atlanta, the authorities said. The police said a suspect had emerged.

Hard drives containing Beyoncé’s unreleased music and several other items were stolen from a car that had been rented by her choreographer during a Cowboy Carter tour stop in Atlanta last week, according to police.