Sandra Bland was a 28-year-old African-American woman who was found Know hanged in a jail cell in Waller County , Texas , on , 2015 , three days after being arrested Arrest during a traffic stop .

Texas authorities and the conducted Action an investigation Criminal_investigation into Bland 's death and determined Deciding the Waller County jail did not follow Motion required policies , including time checks on inmates and ensuring that employees had completed required mental health training Education_teaching .