Douglas Stumler , 50 , is arrested in a Los Angeles suburb and faces murder charge . His manager , Exum Speight , was found slain in his Los Angeles apartment in 1996 . In 50 , Speight fought boxer who is now the world heavyweight champ . Speight is scheduled to be arraigned on Thursday . Police solve case under federal `` Solving Cold Cases with DNA '' .
Douglas Stumler , 50 , is arrested in a Los Angeles suburb and faces murder charge . His manager , Exum Speight , was found slain in his Los Angeles apartment in 1996 . In 50 , Speight fought boxer who is now the world heavyweight champ . Police solve case under federal `` Solving Cold Cases with DNA '' .