Teenager on Gunnedah murder charge refused bail in Tamworth Children's Court

The girl made no application for bail in Tamworth Children's Court on Thursday morning.

Magistrate Mal MacPherson has ordered the young person to remain in juvenile detention until the case returns to court in September.

Mr MacPherson has suppressed key details of the case including the nature of the alleged victim's injuries, along with any information that tends to identify the families involved.

Police applied for the suppression orders in court as investigations into the alleged murder continued on Thursday.

The accused was represented by Legal Aid's Wendy McCauliffe on Thursday morning, and she was not required to enter a plea to the murder charge.

Detectives have been ordered to compile a brief of evidence and serve it on the defence before the case returns to court.

A teenage girl will face court on Thursday morning charged with killing a young relative a day earlier.

The teenager will appear in a local children's court on one count of murder. She remains in custody at a local police station, 24 hours after her arrest.

The teenager was found nearby the family farm, which is on the outskirts of Gunnedah, after the discovery of the young girl's body. She was taken to Gunnedah police station for questioning.

Paramedics and police tried to revive the young girl but she died at the scene. Police said she suffered significant injuries.

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Senior police have labelled the girl's death as horrific.

The farm remains a crime scene with officers standing guard on Thursday.

A strike force has been setup to investigate the girl's death, and is being led by Oxley detectives. The State Crime Command's homicide squad was notified, but local detectives have taken charge of the case.

The location of the alleged murder cannot be reported for legal reasons, as not to identify the alleged victim's identity, or the family involved.

The Leader revealed on Wednesday the alleged victim was staying at the family farm in Gunnedah for the school holidays.

Investigations are continuing.

The horrific details of the case have shocked the Gunnedah community and the local council has said it will rally to help the family.

In a radio interview with ABC New England North West, Gunnedah mayor Jamie Chaffey said the thoughts and prayers were with both the families involved as well as the first responders who were at the scene.

"It's an absolute horrific situation that we're in," he told the ABC.

"It's really horrible to believe."

He said much of the community, like himself, were in "disbelief" at what had unfolded.

"Something you never think will happen in your community ... has happened," he said on Thursday morning.

"[I] can't think of the pain that they must be going through."

He urged people to contact local support services if they needed to talk.

"If you need support during this time please reach out and talk to someone," Cr Chaffey said.