Complex sentence: Guider eventually attracted the attention of police who were investigating the disappearance of a nine year-old girl named Samantha Knight, who had disappeared from her home in the Sydney suburb of Bondi on 19th August, 1986.
Split into simpler sentences: Guider eventually attracted the attention of police who were investigating the disappearance of a nine year-old girl named Samantha Knight. The latter had disappeared from her home in the Sydney suburb of Bondi on 19th August, 1986.