A woman has been injured during a police shooting in Thornbury this afternoon.
Police were called to reports of a woman armed with a kitchen knife in a park near Collins Street about 2.50pm.
It is believed police challenged the woman to drop the knife before OC spray was deployed.
The woman allegedly ran at officers while holding the knife before one shot was fired by police just before 3pm.
The woman in her 50s was arrested and taken to hospital with serious injuries to her thigh.
Armed Crime Squad detectives will investigate the incident which will be oversighted by Professional Standards Command, as per standard protocol when a police firearm is discharged.
Anyone who witnessed the incident or has dashcam or CCTV footage, are urged to contact Crime Stoppers on 1800 333 000 or visit www.crimestoppersvic.com.au.
