Yep. This was the 'noose'.
"The FBI learned that garage number 4, where the noose was found, was assigned to Bubba Wallace last week. The investigation also revealed evidence, including authentic video confirmed by NASCAR, that the noose found in garage number 4 was in that garage as early as October 2019. Although the noose is now known to have been in garage number 4 in 2019, nobody could have known Mr. Wallace would be assigned to garage number 4 last week.
Bubba Wallace: FBI says no crime committed after noose found in stall