Police have combed bushland, drained a creek and excluded a concrete slab from investigations on the fifth day of a renewed search for the remains of missing three-year-old William Tyrrell.
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Officers searched an area of bush a kilometre from where the boy disappeared in Kendall on the mid north coast, digging up dirt and draining a shallow creek of water on Friday morning.
A piece of fabric was collected from the creek-bed as potentially relevant evidence.
On Thursday, Australian Federal Police officers brought in ground-penetrating radar to scan a concrete slab at the property that belonged to the boy's foster grandmother.
William disappeared from the home seven years ago, and the slab was laid after that.
But on Friday morning police confirmed results from the slab had not furthered the investigation.
It comes after Strike Force Rosann officers investigated theories William may have fallen from a balcony at the property.
Earlier this week police also seized a Mazda that previously belonged to the foster grandmother, who has since died.
The findings of a coronial inquest into William's disappearance, which concluded last year, are yet to be handed down.
A $1 million reward for information on the case still stands.
Australian Associated Press
