NSW Police have announced a $1 million reward for information relating to the cold case murder of missing Lake Macquarie teenager Gordana Kotevski.
The 16-year-old was last seen around 9pm on November 24, 1994.
Gordana Kotevski was forced into a vehicle on Powell Street at Charlestown, while walking from a shopping centre to her aunt's home on the same road. She has not been seen since.
A $100,000 reward for information into her disappearance was announced more than 10 years ago, but today the NSW Government and NSW Police will increase that to $1 million.
Gordana's mother, Peggy Kotevski, said she had wanted police to issue a higher reward for information about her daughter's disappearance for a long time.
"I am happy in a way," she said.
Mrs Kotevski had a message for the perpetrators.
"Know that I'll never give up until we get to the bottom of it. My face will be in your face 24/7 until my last breath."
Gordana's aunt, Julie Talevski, says there has been no closure for the family.
"Not a day goes by that we don't think about the 'what if’s' of life," she said.
A coronial inquest into Gordana's disappearance in 2003 found that she had died, most likely as a result of foul play.
Lake Macquarie Police District Commander, Superintendent Steve Kentwell, said investigators had fresh lines of inquiry.
He said it was hoped the significant reward could spark some people's memories.
"There are people out there — perhaps not just in the Lake Macquarie community, but elsewhere in the Hunter, around the state and even the country — who have vital information which could help Strike Force Arapaima detectives," he said.
Superintendent Kentwell said there had been eyewitness accounts about the car involved in Gordana's abduction.
"If you have been sitting on this information for almost 28 years, now is the time to contact investigators."