– Seven people remained in the hospital Sunday for injuries sustained during a multicar accident that sent debris careening into the grandstands at Daytona International Speedway on Saturday night.

A total of 28 people were injured during the last lap of the race, based on numbers released by the speedway and hospitals.

Meanwhile, Speedway crews overnight rebuilt the 22-foot-tall fence in front of the grandstand where sections of driver Kyle Larson's race car broke through, adding and reinforcing new sections of chain link. Track and NASCAR officials said they are still reviewing the accident to determine if there are any changes necessary to improve safety.

"If there are things that we can incorporate into the future, whether it's the current property now or any other redevelopment, we will," Speedway President Joie Chitwood said.

Chitwood said 14 people were treated at the track's care center, while hospitals in Daytona Beach and Port Orange treated 14 others.

Injured fans received assistance from the Speedway after being released from the hospital, including a few who were taken back to Orlando, Chitwood said.

Fan injuries remained on the mind of several NASCAR drivers, including Mark Martin, who placed third in the Daytona 500. After the race, Martin said he had a "sick feeling" knowing that fans had been injured the day before. Race champion Jimmie Johnson also made note of the injured fans during his Victory Lane celebration.

On Sunday morning, scores of fans attending the race took photos of the reconstructed fence.

Mary and Richard Scott, visiting from Long Beach, Miss., had been sitting in the stands, but far from wreckage from Larson's car, which broke apart during the crash.

"It was scary watching him, knowing the debris was flying up, but they have protections in place and you hoped they would work," said Mary Scott. "The fire and smoke, never saw anything like it."