NEW : Oscar Pistorius ' family denies a BBC report that the runner is suicidal . Prosecutors argue he intentionally killed her after a loud argument . NEW : Pistorius `` believes he has a purpose in life , '' his uncle says . Pistorius is accused of killing his girlfriend , Reeva Steenkamp , on February 14 . The athlete claims self-defense and murder charges are being pursued against him.
NEW : Oscar Pistorius ' family denies a BBC report that the runner is suicidal . NEW : Pistorius `` believes he has a purpose in life , '' his uncle says . Pistorius is accused of killing his girlfriend , Reeva Steenkamp , on February 14 . The athlete claims self-defense and murder charges are being pursued against him.