Presentation

     On May 18th, an unbelievable incident happened.  Only fifteen-year-old boy killed his mother and grandmother with a knife.  After he killed them, he changed his bloody clothes, and surrendered himself to the police.  He had the knife which he used to kill them.  According to an announcement of police, in the morning when this incident happened, his mother and grandmother complained of his grade, and he got angry at it, murdered them.
    
     Police continue to investigate the boy.