The search for the remains of William Tyrrell has unearthed a faded red piece of material, as police scour a muddy creek for any sign of the missing boy.

On Monday afternoon, police began digging through the mud in a new section of the drained creek under the supervision of Detective Chief Inspector David Laidlaw, who has led the investigation for the past two years.

The piece of fabric was found shortly after 3.30pm and pulled from the base of a tree before being placed in an evidence bag for forensic examination.

Image: NSW Police / 9News (Twitter)

The discovery caused a stir, as William was last photographed in a red and black Spider-Man costume.

Volunteers from the Rural Fire Service pumped water out of the new section of the creek earlier in the day, as riot squad police traversed the surrounding bush searching for clues. The creek is east of Batar Creek Road, on the outskirts of Kendall where William disappeared seven years ago.

The discovery was made on the 22nd day of the latest search for William.

On the same day, forensic police used a laser-guided mapping device to scan the search site, creating an in-depth digital map of the area that would be useful for marking the progress made in the large search area.

With heavy rainfall hitting the area in the last few days, detectives and forensic experts have faced an even tougher task of sifting through the tonnes of dirt in the site.

William went missing from his foster grandmother’s home in Kendall, on the NSW Mid North Coast, in September 2014.

Image: 9News (Twitter)

This article first appeared on Over60.