The federal civil rights trial of a former Louisville, Kentucky, police officer involved in the 2020 death of Breonna Taylor, a Black woman whose killing sparked a series of racial justice protests, ended in a mistrial on Thursday.

U.S. District Judge Rebecca Grady Jennings declared the mistrial in the case of Brett Hankison, who faced charges of civil rights violations for allegedly employing excessive force, as the jury conveyed their inability to reach a unanimous verdict.

Federal prosecutors now need to decide whether they will pursue a retrial for Hankison.

A spokesperson for the Department of Justice stated in a written release that the department “is actively considering all of our available options,” Reuters reported.

Prosecutors claimed that on the night Taylor was killed, Hankison employed unwarranted force, violating not only her civil rights but also those of her boyfriend and nearby neighbors.

Hankison, refuting the charges, denied two federal counts of deprivation of rights under the color of law—one for Taylor and another for three of her neighbors, CNN reports.

These charges are related to the flawed raid conducted by Louisville Metro Police officers, resulting in the fatal shooting of Taylor, an emergency room technician, shortly after midnight on March 13, 2020.

Written by B.C. Begley