Mum's Desperate Social Media Plea For Missing Daughter

A young girl has been missing from her family's home since Sunday, and her mum is calling on the public to help find her.

On Monday, Chloe Johnston posted photos of her 13-year-old daughter Kiera-Lee McNamara on Facebook, saying the girl was last seen around the suburb of Gorokan -- on the NSW central coast -- around 11am on Sunday.

"Please if anyone hears anything or sees anything at all, please let me know ASAP," Johnston said.

"You can also contact local police and make a report."

"All of Kiera’s family and friends are very worried about her and we are pleading that someone knows something of her whereabouts."

Johnston later updated the post to say the teenager had "apparently last been spotted at Wyong train station at 9am" on Tuesday.

In a second Facebook post shared on Tuesday afternoon, the mother said information had been received to suggest Kiera-Lee "may be on a train heading to Queensland."

In a statement, NSW Police confirmed appealed for public assistance to track down the teenager.

"She has not been seen or heard from since and police and her family are concerned for her welfare due to her young age," police said.

The 13-year-old is described as being of Caucasian appearance, about 150cm tall, of a slim build and with brown shoulder-length hair.

She was last seen wearing a grey oversized singlet and black ‘Nike’ slides.

Anyone with information is urged to contact police immediately.