The remains, discovered in a suitcase near the town of Wynarka, are believed to be those of a young girl aged between two and four.

Last week, the officer in charge of the Major Crime Investigation Branch, Detective Superintendent Des Bray, announced that investigators believe the little girl could have died up to eight years ago – potentially making her aged 10-12 if she was alive today.

Commissioner Grant Stevens said enquiries were focused within the state but all possibilities were being explored.

"To suggest something like that (Madeleine McCann) at this point in time would purely be speculating for the benefit of getting attention," he said.

His comments come after police discovered part of a quilt, located with the remains, originated in New York.

When pressed further about a possible international connection, Comm Stevens said they had ruled nothing out.

Since the remains were discovered earlier this month, police released images of clothing located with the suitcase in hope of identifying the child.

Police are still appealing to a man seen in the area about six to eight weeks ago with a dark suitcase to come forward.

Described as being aged about 60, of Caucasian appearance, average height, lightly built, clean cut and neatly dressed, he was seen by a number of locals in the area and investigators are seeking to identify him and potentially exclude him from the inquiry.

Anyone who saw the man or has seen the suitcase by the highway, or who has any information that may assist the investigation, is asked to contact Crime Stoppers on 1800 333 000 or report online at https://sa.crimestoppers.com.au/