CORAL GABLES, Fla.  — Former Miami Heat star Alonzo Mourning was sued Wednesday over a traffic crash that raised questions about whether he improperly left the scene.

The lawsuit seeking unspecified damages was filed on behalf of 21-year-old William Candelario, who suffered head injuries in the rollover crash near Miami Beach. Candelario said he has little memory of what happened and his attorney said the lawsuit is aimed at finding answers.

In a brief interview, Mourning said he came upon the crash scene but declined to say whether he struck one of the vehicles.

Sgt. Thomas Pikul, a Florida Highway Patrol spokesman, said investigators determined that Mourning’s blue Porsche Panamera struck Candelario’s Audi A4 a short time after the Audi had collided with a third vehicle.

Mourning, currently the Heat’s vice president for player programs and development, acknowledged leaving the scene. Investigators said he returned about 40 minutes later, in another car driven by his wife, Tracy.

“I left and came right back. Left and came back. There was no panic at all because I didn’t do anything wrong. There was a current accident already in progress,” the 41-year-old Mourning said.