FBI involved in search for missing Crystal Lake boy

FBI agents specializing in missing children are working with the Crystal Lake Police Department in the search for a missing 5-year-old boy.

Andrew "AJ" Freund was last seen about 9 p.m. Wednesday on the 0-100 block of Dole Avenue. The boy is roughly 3 feet, 5 inches tall and weighs 70 pounds. He has short, blond hair. He was last seen wearing a blue Mario sweatshirt and black sweatpants, police said.

Andrew's parents reported him missing Thursday morning.

Just before 4 p.m. police expanded the area they consider a crime scene, though they did not offer details about what prompted them to do so, ABC 7 Chicago reported.

What amounted to a small task force was seen around and inside of the Freund home, as well as searching the yard and neighborhood, the TV station said on its website, noting bloodhounds were also in the area.

A boat equipped with sonar was used to search Crystal Lake near Main Beach.

Authorities are seeking the public's assistance while they continue to investigate.

Anyone with information is urged to contact the department at (815) 356-3620.

An anonymous tip can be sent to the Crystal Lake Police Department by texting the word CLPDTIP along with the tip information to 847411 (TIP411).

  Police have a vehicle towed from the driveway of missing 5-year-old boy's home in Crystal Lake on Thursday evening. Paul Valade/
  Authorities on Thursday evening investigate the disappearance of a 5-year-old boy on the 0-100 block of Dole Avenue in Crystal Lake. Paul Valade/
The Crystal Lake Police Department is seeking the public's assistance in finding Andrew "AJ" Freund, a 5-year-old Crystal Lake boy last seen Wednesday night. Courtesy of Crystal Lake police
  Andrew "AJ" Freund, 5, was reported missing Thursday from a home the 0-100 block of Dole Avenue in Crystal Lake. Paul Valade/
  Police officers set up a staging area Thursday evening at the Crystal Lake Salvation Army, which is near the home of missing 5-year-old Andrew "AJ" Freund. Paul Valade/
  A Lake and McHenry counties' side scan sonar boat was being used near Main Beach on Crystal Lake Thursday night in Crystal Lake. John Starks/
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