A 36-year-old man accused of punching an elderly man in the face at the Mandurah Forum will appear in court today.
The 92-year-old victim was getting out of his car in the car park of the shopping centre around 1.30pm on Tuesday when he was approached by Eddie Gaugnin.
Without warning, Gaugnin allegedly punched the victim in the head, knocking him to the ground.
When a bystander tried to intervene, it's alleged Guagnin threatened them with a box cutter.
The 36-year-old was arrested a short time later at a nearby house.
The victim, Graeme, told 7NEWS he nearly lost part of his ear in the attack and now needs assistance to walk.
"There was blood all over the place," he said.
Gaugnin has been charged with aggravated assault occasioning bodily harm and being armed in a way that may cause fear.
He will appear in the Perth Magistrates Court today.
Peel Thunder's Bo Allan becomes an Eagle
Christmas on the Murray 2024
Man charged over Henderson hit-and-run crash
Manslaughter charges dropped against man accused of Mandurah boat tragedy
Rockingham boy critically injured in Bali quad bike crash
Christmas cheers returns to Mandurah
City of Mandurah launches new community safety strategy
Winners announced for the 2024 Alcoa Peel Business Excellence Awards
Mandurah: Three girls charged with aggravated armed robbery