Fight erupts on Chatswood street as man attempts to steal $94,000 worth of gold

Police are investigating the alleged assault and attempted robbery of a man carrying $94,000 worth of gold on Sydney's north shore.

Just before 2pm on Sunday a man was dropping a woman off on Thomas Street, Chatswood.

A man allegedly tried to steal $94,000 worth of gold from a 50-year-old on Sydney's north shore. Photo: Phil Carrick

As she exited the vehicle another man allegedly got into the car and struck the 50-year-old man on the face with a metal object.

As the victim attempted to drive away, the alleged thief jumped out of the moving car and fled down the street with the bag of gold. 

The victim gave chase and a fight erupted, with the 50-year-old man securing the gold and before the other man could escape.

Paramedics treated the 50-year-old man at the scene, before taking him to Royal North Shore Hospital.

Police have seized items for forensic examination and commenced an investigation.

It is unknown whether the men knew each other.