A noose was found on Sunday in Wallace’s garage stall at the race in Alabama, NASCAR announced. It comes less than two weeks after Wallace successfully campaigned to ban the displaying of the Confederate flag at NASCAR events.

Wallace, who is the circuit’s only full-time Black driver, released a statement of his own, saying “This will not break me, I will not give in nor will I back down.”

NASCAR statement: A noose was found in Bubba Wallace’s garage stall today at Talladega. NASCAR is investigating.

“The noose was discovered on the same day NASCAR’s fledgling flag ban faced its biggest challenge. The ban took effect before last week’s race near Miami, but there were only about 1,000 military members admitted into that race. At Talladega, in the heart of the South, as many as 5,000 fans were allowed in, even though rain postponed the race until Monday.”

Wallace, NASCAR’s only Black driver, successfully pushed to ban the Confederate flag at its tracks two weeks ago.