article_snippet.sent: Luke, 11, Lauren, 7, and Matthew, 10 .
article_snippet.sent: The 11-year-old, who is autistic, was reportedly seen walking near the Devils River on Sunday, four kilometres south of Luke Shambrook campsite where Luke Shambrook was last seen.
article_snippet.sent: A Victorian Police spokeswoman told AAP late on Sunday that a family saw a young boy matching Lukes description while a family were driving in the Devils River vicinity.
article_snippet.sent: Luke is described as being of medium build, about 150 cm tall with olive skin, brown hair and brown eyes.
highlights_snippet.sent: The 11-year-old was reportedly seen walking 4 kms from Luke Shambrook campsite .
  