A volunteer team using cadaver detection dogs to search for the body of a British child who disappeared in Australia more than 50 years ago has found an area of interest.

The group hopes their finding is a breakthrough in Cheryl Grimmer's case and have reported the location to New South Wales Police, who are now on the scene.

Authorities suspect the three-year-old, who had emigrated from Bristol with her family, was abducted from Fairy Meadow beach in Wollongong in January 1970. A search will be conducted tomorrow with the assistance of specialist officers as part of ongoing inquiries, police told the BBC in a statement.

Today, bathed in the sun, the beach looks as idyllic as it must have been all those years ago. From the sand dunes, looking inland, the terrain gradually climbs into dense bushland.

A short drive up into the hills, there's a small pocket of woodland on the edge of an upmarket suburb that could reveal a terrible secret.

Balgownie was the location mentioned in a confession made by a teenage boy - also from England - a year after the toddler vanished. Decades later, a judge disallowed that admission.

In 2019, a trial of the suspect, known only by a codename, Mercury, who'd been charged with Cheryl Grimmer's abduction and murder, collapsed. The man, in his 60s, had denied any wrongdoing.

Cheryl's brother Ricki Nash was seven when his little sister vanished. He last saw her in the changing rooms at Fairy Meadow. This should have been done 55 years ago, he said as the specialist team with dogs trained to detect human remains began its work. My question is, why wasn't it?

He has spent a lifetime craving answers, but does not want to find them here among the tall trees, creek and bushes.

We always live with the hope that someone took her that couldn't have a child, raised her well. One day she'd grow up, find out she didn't belong to that family. We've had people over the years do that to me and to our family: knock on the door and say that they are Cheryl and your heart rate goes at a million-to-one, Mr Nash told the BBC.

Ricki Nash said the news made him tremble. If it is Cheryl out there – she has been there for 55 years now – she shouldn't have been, he said.

The search for Cheryl Grimmer continues after more than 50 years. The retired investigator has challenged the individual or group responsible for the toddler's disappearance to come forward. What about doing something for Cheryl, that little girl you took away and owning up to what you did and [giving] families here in Australia and in England... some peace, he said.

Much has changed since 1970. But one thing remains steadfast - the determination of a grieving family to uncover the truth.