( CNN ) A Massachusetts teenager faces a pretrial hearing in April on involuntary manslaughter charges for allegedly sending text messages urging a friend to commit suicide , even after he expressed second thoughts , authorities said Saturday . Michelle Carter , 18 , was indicted on February 5 . Conrad Roy , 18 , of Fairhaven and Mattapoisett , Massachusetts , was found dead in his car of apparent carbon monoxide poisoning on July 13 , Sgt . Kevin Kobza , public information officer for the Fairhaven Police Department , said Saturday . At one point the night of Roy 's death , he exited the vehicle and communicated to Carter that he was having second thoughts about taking his own life , Kobza told CNN . Carter then urged him via text message to get back in the car , Kobza said . Upon searching Roy 's cell phone , police discovered `` hundreds '' of texts between Roy and Carter , many which contained language from Carter that encouraged Roy to take his own life , Kobza said . `` Instead of attempting to assist him or notify his family or school officials , Ms. Carter is alleged to have strongly influenced his decision to take his own life , encouraged him to commit suicide and guided him in his engagement of activities which led to his death , '' Gregg Miliote , director of communications for the Bristol County District Attorney 's Office , said in a statement . Carter 's lawyer , Joseph Cataldo , said Saturday that the evidence will show this was not manslaughter and that Carter attempted to console Roy on `` many occasions . '' `` The facts that have been given out to the public at this point put her in the worst possible light , '' Cataldo said . `` My heart goes out to the family , but this was a young man who planned this for months and months . '' On a Twitter page confirmed by the District Attorney 's Office to be Carter 's , several photos and tweets about Roy have been posted since his death . One tweet reads , `` I ca n't believe today already marks 4 months without you . I love you and miss you always Conrad ... '' In September 2014 , Carter organized a softball tournament in Roy 's memory and raised $ 2,300 for mental health awareness , according to Kobza . Carter was arraigned on the indictment on February 6 in New Bedford Juvenile Court , released on $ 2,500 bail and told not to use social media , according to Miliote . Carter was indicted as a youthful offender because she was not yet 18 when the alleged crimes occurred . Youthful offenders are tried in juvenile court but the proceedings are public , Cataldo said . Because of a familial relationship he has with the victim 's family , Bristol County District Attorney Thomas Quinn recused himself from the investigation and prosecution of this case , the District Attorney 's Office said . Carter 's pretrial hearing is set for April 17 .
Conrad Roy , 18 , was found dead of apparent carbon monoxide poisoning , police said . Police : " The death is being investigated as a homicide.