( CNN ) A Detroit mother arrested last month after police discovered the bodies of two of her children inside a freezer was arraigned this week on murder and torture charges . Wayne County Prosecutor Kym Worthy charged Mitchelle Angela Blair on Wednesday with killing her then 13-year-old daughter , Stoni Ann Blair , and her then 9-year-old son , Stephen Gage Berry . According to Detroit Police Chief James Craig , the bodies were found wrapped in plastic inside the freezer by a bailiff performing a court ordered eviction on March 24 . The Wayne County medical examiner has since determined that Stoni died from multiple blunt trauma injuries and Stephen from multiple blunt trauma and thermal injuries . Both were determined to be homicides , according to spokesman Ryan Bridges . According to CNN affiliate WDIV , investigators believe Stephen was scalded with hot water , beaten and strangled in August 2012 , while Stoni was killed in May 2013 . A message left for Blair 's court appointed attorney , who entered not guilty pleas on her behalf at her arraignment , was n't immediately returned . In addition to the two counts of premeditated murder -- each of which carries a mandatory life sentence without the possibility of parole -- Blair , 35 , has been charged with two counts of torture , four counts of felony child abuse and one count of committing child abuse in the presence of another child . She has two other children , a 17-year-old daughter and an 8-year-old son , both of whom are now in in protective custody , according to Worthy . Blair will be back in court June 19 for a court ordered competency hearing .
Murder and torture charges for Detroit mom after bodies found in her freezer . Prosecutors accuse Mitchelle Angela Blair of killing her 13-year-old daughter and 9-year-old son . Their bodies were discovered in her freezer as she was evicted from her home last month .