Police said Wednesday they were still investigating the fatal shooting of an Atlanta business executive on the edge of Piedmont Park and they declined to identify the other people who were in the vehicle with her when she was shot.

Diane McIver was riding in the front passenger seat of a white 2013 Ford Expedition with some people she knew Sunday evening when a firearm went off in the vehicle, an Atlanta police report says. She was taken about five miles away to Emory University Hospital on Clifton Road, roughly a 17-minute drive. She died during surgery early Monday morning.

The report says officers interviewed the vehicle’s driver about the incident, but it does not identify that person. An Atlanta police spokeswoman declined to discuss who may have shot McIver and why and whether charges will be brought against anyone.

The Fulton County District Attorney’s office also declined to comment, citing the ongoing police investigation. The Fulton County Medical Examiner’s Office did not respond to repeated requests for comment about the manner of McIver’s death.

Reached briefly on his cell phone Wednesday morning, McIver’s husband, Tex, described his state as “the worst I have ever felt” before saying he had to attend a meeting that would last into the afternoon. A local attorney and the vice chairman of the Georgia State Election Board, Tex McIver did not answer subsequent requests for comment.

Diane McIver was president of Corey Airport Services, a marketing company based in Atlanta. Randy Evans, an Atlanta attorney and family friend, said she was “completely vivacious and full of life.”

“She was an extremely intellectual and well-read woman who had a keen sense for business,” Evans said. “She had a good strong will and they were just like the perfect match.”

US Enterprises Inc. General Counsel Ken Rickert said Diane McIver worked with Corey Airport Services for 43 years after graduating from Georgia State University. McIver, Rickert added, lived with her husband in Buckhead, near Lenox Square. Rickert said he met McIver 25 years ago, when she hired him.

“She was a dynamic individual,” Rickert said. “A great, successful executive who is going to be missed by everybody over here.”