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SEARCY, Ark. — Two-year-old Malik Drummond has not been seen since Sunday and with temperatures dropping, concern is growing.

Malik’s mother said her son, who is autistic, wandered away from his home while she took a bath and his father slept.

Police are not ruling out the possibility of foul play and are using a polygraph machine to rule people out as possible suspects.

“We’re not ruling out foul play but at the same time we don’t have anything indicating there was foul play,” said Cpl. Steve Hernandez with the Searcy Police Department told KTHV-TV.

Search dogs have been brought in and numerous volunteers have searched but there is no sign of the child.

Malik was last seen wearing brown pants and a blue shirt.