The biggest star of the female featherweight division might be on ice for a while, as Cris “Cyborg” Justino just got flagged by USADA. This comes on the heels of the UFC announcing Holly Holm and Germaine de Randamie would be fighting for the inaugural 145-pound belt.

Here’s the UFC’s official statement:

The UFC organization was formally notified today that the U.S. Anti-Doping Agency (USADA) has informed Cristiane “Cyborg” Justino of a potential Anti-Doping Policy violation stemming from an out-of-competition sample collection on December 5, 2016.

USADA, the independent administrator of the UFC Anti-Doping Policy, will handle the results management and appropriate adjudication of this case. It is important to note that, under the UFC Anti-Doping Policy, there is a full fair legal review process that is afforded to all athletes before any sanctions are imposed.

Consistent with all previous potential anti-doping violations, additional information or UFC statements will be provided at the appropriate time as the process moves forward.