Complex sentence: As regards the missing hands and feet, according to eyewitnesses, when Luxemburg's body was thrown into the canal, weights were wired to her ankles and wrists which could have caused her extremities to become severed in the months her corpse spent in the water.
Split into simpler sentences: As regards the missing hands and feet: according to eyewitnesses, when Luxemburg's body was thrown into the canal, weights were wired to her ankles and wrists. These could have slowly severed her extremities in the months her corpse spent in the water.