article_snippet.sent: Luke, 11, Lauren, 7, and Matthew, 10 .
article_snippet.sent: A Victorian Police spokeswoman told AAP late on Sunday a family saw a young boy matching Luke's description while a family were driving in the Devils River vicinity.
article_snippet.sent: But Luke may not even know Luke is lost and is known to frequently hide, according to a family.
article_snippet.sent: Having met Luke's family during a push to open a special school in Melbourne's south-east, Opposition emergency services spokesman Brad Battin says it is devastating to hear the 11-year-old is missing.
article_snippet.sent: Sergeant Greg Paul said Luke's parents Tim and Rachel had been updating Luke on A large search and appreciated the efforts of all those out looking for Luke's parents Tim and Rachel little boy. '
article_snippet.sent: Luke's a lovely young kid,' Brad Battin told AAP on Sunday. '
article_snippet.sent: Luke displays all the characteristics of a child with autism, which means Luke might not even think Luke is lost.'
article_snippet.sent: Luke is described as being of medium build, about 150 cm tall with olive skin, brown hair and brown eyes.