The family of Kevin Ward Jr are threatening to take further action after Tony Stewart was cleared of fault in his death by a grand jury.
Ward Jr died from injuries sustained when Stewart's car struck him at Canandaigua Motorsports Park in New York on August 9.
The Ontario County (N.Y.) district attorney Michael Tantillo referred the decision to charge Stewart to a grand jury, who found there was not enough evidence against the NASCAR star.
However, a damning statement from Ward Jr's family said they were exploring different avenues in their attempt to sanction Stewart.
"Our son got out of his car during caution while the race was suspended," the family statement read.
"All the other vehicles were reducing speed and not accelerating, except for Stewart who intentionally tried to intimidate Kevin by accelerating and sliding his car towards him causing this tragedy.
"The focus should be on Mr. Stewart and not my son. This matter is not at rest and we will pursue all remedies in fairness to Kevin."
Conversely, Stewart released a statement following Tantillo's revelation of the grand jury's assessment, claiming his thoughts were with the deceased's family.
"This has been the toughest and most emotional experience of my life, and it will stay with me forever," Stewart said in a statement.
"I'm very grateful for all the support I've received and continue to receive.
"I respect everything the District Attorney and Sheriff's Office did to thoroughly investigate this tragic accident. While the process was long and emotionally difficult, it allowed for all the facts of the accident to be identified and known.
"While much of the attention has been on me, it's important to remember a young man lost his life. Kevin Ward Jr.'s family and friends will always be in my thoughts and prayers."