Above: Penny Hill.

The NSW Government has increased a reward to $1 million for information into the murder of Narrabri woman Penny Hill nearly 30 years ago.

Penny Hill, then aged 20, was found unconscious with severe head and facial injuries on Cassilis Road, near Coolah, about 8am on Monday, July 8, 1991.

She was taken to John Hunter Hospital, where she died two weeks later, on Sunday, July 21, 1991.

The Narrabri community shared the grief of the Hill family in their loss and along with the family have hoped for at least some closure with the bringing to justice the perpetrator of the crime.

The attack on Penny shocked the north west community.

In 1992, a coronial inquest held in Mudgee returned an opening finding on the cause and manner of her death.

Detectives from the State Crime Command’s Homicide Squad began further investigations into Penny’s murder under Strike Force Samdon, before a second coronial inquest was held in 2012.

The second inquest also delivered an opening finding and was returned to investigators, who pursued a number of new lines of inquiry.

However, no one has ever been charged in relation to Penny’s death.

In acknowledgement of the sad July 8, 28-year anniversary, the NSW Government has increased the reward to $1 million for information which leads to the arrest and conviction of those responsible for Penny’s murder.

Homicide Squad Commander, Detective Acting Superintendent Mark Henney, said after almost three decades of searching for answers, the Hill family deserve closure.

“Penny had only just moved to Coolah – to begin her first job as a nanny at the Black Stump Motel – just three days before her body was found,” Detective Henney said.