Mitchell's police-issued car was rushing east on Interstate 64 at 126 mph to the scene of an earlier wreck in Mascoutah when it swerved across the median in Shiloh. It ran into the path of a car occupied by the two sisters.
The girls died at the scene.
State Police Lieutenant Scott Compton says Mitchell wasn't fired or suspended but would no longer have access to Illinois State Police reports or facilities pending the outcome of the case.
