The fragment washed ashore on the French island of Reunion in the Indian Ocean and was taken to France for testing.
The federal lawsuit accuses the Texas state trooper who arrested Bland of depriving her of her constitutional rights. Bland was found hanging in a jail cell three days later.
"Leap seconds" are added from time to time to keep atomic clocks in sync with a time standard tied to the rotation of the Earth. This will be the 26th time it's been done.