Around 9.10am, the man was walking through parklands on Telegraph Road when he was approached from behind by a man.

The man held the weapon to the back of the victim and made demands for money.

After receiving a sum of cash, the perpetrator fled the scene.

The 76-year-old was not physically injured as a result of the robbery.

The male person is described as being in his mid-20s, Caucasian in appearance, and approximately 160cm tall.

Police investigations are continuing.

Anyone with information can contact Crime Stoppers anonymously via 1800 333 000 or crimestoppers.com.au 24hrs a day.