Friends of a Perth doctor accused of manslaughter have expressed their "complete shock" following an incident that led to a man's death. Christian Jack Joseph, 26, was charged after allegedly pinning a man to the ground in a chokehold during a confrontation early Saturday.

Joseph and a friend were reportedly returning home from a night out in Fremantle when they observed a man peering into a window of the friend's home. The pair pursued the man, and Joseph allegedly restrained him by placing him in a chokehold. The 63-year-old man became unconscious, prompting Joseph to perform CPR and instruct his friend to call emergency services.

The man was transported to Fiona Stanley Hospital, where he later died. Joseph, a junior doctor at Sir Charles Gairdner Hospital, was subsequently charged with manslaughter. He remains in custody awaiting his next court appearance in August.

Friends described Joseph as a genuine, talented, and committed individual who aspired to follow in his father's footsteps as a doctor. They emphasized his dedication to his studies and his ability to balance them with a social life, highlighting his sense of humor and friendly demeanor. "He always wanted to be a doctor and follow in his dad's footsteps, he was the smartest guy at our school by a mile, it's a complete shock," one friend stated.

Joseph's social media activity reveals interests in music, travel, and his medical career. He is also a practitioner of Brazilian jiu-jitsu, a martial art that involves grappling and submission techniques, including chokeholds. He has previously won gold medals in the sport, including a state title in the white belt division.

During his initial appearance in Perth Magistrates Court on Sunday, Joseph, who was wearing a blue forensics jumpsuit, was supported by family and friends. His lawyer argued that the alleged attack was out of character for the doctor, who is dedicated to saving lives, and that Joseph acted in self-defense, feeling intimidated by the older man's behavior. The defense noted that it was unclear why the 63-year-old man lost consciousness so quickly.

Prosecutors acknowledged that the man's actions at the window were unclear. The court was informed that CCTV footage of the incident exists. The magistrate denied a request to suppress Joseph's name, stating that while reporting would be distressing for the accused, there were insufficient grounds to withhold his identity. Joseph is scheduled to appear next in Stirling Gardens Magistrates Court on August 5.

The Perth doctor has been charged with manslaughter over the alleged confrontation in Fremantle. Pictured are forensic officers at the scene