IAAF: all 100m tests negative (source: https://www.earthtimes.org/articles/show/281964,iaaf-all-100m-tests-negative.html).
From the press release: “All the test results are negative. Please note that all the athletes involved in this final have also tested negative in all other tests carried out prior to the 100m final…”
It seems that the latest rumor started even before the tests had been analyzed.