On Sunday, A noose was found in the garage stall of Bubba Wallace at Talladega Superspeedway in Lincoln, Alabama.
The incident took place after Wallace, NASCAR's only Black driver, successfully pushed the stock car racing series to ban the Confederate flag at its tracks and facilities.
ESPN.com was the first to report the incident.
"Late this afternoon, NASCAR was made aware that a noose was found in the garage stall of the 43 team. We are angry and outraged, and cannot state strongly enough how seriously we take this heinous act," NASCAR said in a statement. "We have launched an immediate investigation, and will do everything we can to identify the person(s) responsible and eliminate them from the sport.
Wallace never saw the noose, ESPN's Marty Smith reported. It was first seen by a member of Wallace's team, who immediately brought it to the attention of NASCAR, Smith reported. NASCAR told Fox Sports that it will work with law enforcement on the incident.
Wallace said in a statement via Twitter that he was "incredibly saddened" by the act.
"Today's despicable act of racism and hatred leaves me incredibly saddened and serves as a painful reminder of how much further we have to go as a society and how persistent we must be in the fight against racism," Wallace tweeted. "Over the last several weeks, I have been overwhelmed by the support from people across the NASCAR industry, including other drivers and team members in the garage. Together, our sport has made a commitment to driving real change and championing a community that is accepting and welcoming of everyone.”
"Nothing is more important and we will not be deterred by the reprehensible actions of those who seek to spread hate. As my mother told me today, "they are just trying to scare you." This will not break me. I will not give in nor will I back down. I will continue to proudly stand for what I believe in."
Information from ESPN.com contributed to this report.