NEW : Roommate says horrible tragedy is `` incomprehensible '' Grad student Annie Le remains found 24 in basement wall in building . Le , Sunday , was last seen entering the building 24 evening . Police : `` Annie was just an amazing person , and I know that when tragedies happen , people always say that , but she truly was , '' Griffeath told the `` Today '' show . ` No suspects in custody , but investigators questioning several people .
NEW : Roommate says horrible tragedy is `` incomprehensible '' Grad student Annie Le remains found 24 in basement wall in building . Le , Sunday , was last seen entering the building 24 evening . Police : No suspects in custody , but investigators questioning several people .