The previous afternoon, she had reported that daughter Semaj Crosby had wandered off from a group of people working outside. The toddler's parents were outside working on their vehicle.

A reverse 911 call was sent to all residents within a five mile radius late Tuesday, police said, asking for the public to search in their own yards in the surrounding area. "We have to find out why [this ended] in such a tragic way". The officials saw Semaj and the woman's other two children.

There is no apparent sign of foul play, Hoffmeyer said.

He said the family had been interviewed multiple times and was was cooperating with authorities.

Dive teams from a half-dozen area fire agencies were called to search the retention ponds near the area, but one firefighter indicated the searches were being done as a precaution, not because the child was seen near the water.

She was last seen wearing a gray long sleeve shirt, with the image of a cat's face, and jeans.

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"On Wednesday 4/26/17 at approximately 11:00PM, the Will County Sheriff's Office along with the Federal Bureau of Investigation gained consent to search the residence of 309 Louis Rd".

"We need to bring her home", Ackerson said. A pond is being searched in the Sugar Creek subdivision and a Cook County helicopter service has provided air search using infrared and heat capabilities.

The Department of Child and Family Services said Wednesday that Gordon is now under investigation for an allegation of neglect. The school property lies along the backyard property line of the Crosby home, he said.

Bloodhounds, detectives, patrolmen, volunteers and more than 80 emergency personnel from the Will County Sheriff's Office and Will County Emergency Management searched Preston Heights through the night without success.

The Will County Sheriff's Office said it considers disappearance to be a missing child case. Adrian Smith, a neighbor who helped search for the child, said he thought something was suspicious.