Enlarge / Fitbit unveils Alta HR, the world’s slimmest fitness wristband with continuous heart rate, as well as two new sleep tracking features “Sleep Stages and Sleep Insights ” at an event hosted by actress and dancer Julianne Hough on March 1, 2017 at SWERVE Fitness in New York. (credit: Dave Kotinsky/Getty Images for Fitbit)

A federal grand jury has returned a criminal indictment against one current and five former Fitbit employees, accusing them of taking stolen trade secrets from their former employer, Jawbone, to their new jobs at Fitbit.

Jawbone went out of business as of July 2017 and is currently undergoing liquidation proceedings.

The two fitness gadget companies were previously staunch competitors and had sued one another multiple times.