Police investigate whether father, 44, worked out at the same gym as strongman who died after pair fought during home invasion Police investigate if man who broke into home visited same gym as homeowner Bradley Soper died after making his way into Harrington Park home on Sunday He became involved in a fight with homeowner Johann Schwartz before he died Soper is believed to have visited the same gym in Sydney CBD as Mr Schwartz By Aidan Wondracz and Josh Hanrahan For Daily Mail Australia Published: 15:06 GMT, 20 February 2019 | Updated: 15:06 GMT, 20 February 2019 Police are investigating whether a personal trainer who died in a home invasion visited the same gym as the father he struggled with during the incident. Bradley Soper, 35, died after he made his way into a Harrington Park home in Sydney's south-west and became involved in a fight with homeowner Johann Schwartz, 44, on Sunday morning. Police probing the death are examining whether both men were known to each other beforehand. Detectives are trying to find out if Soper and Mr Schwartz visited the same Fitness First on Bond Street in the CBD, The Daily Telegraph reported. Police are investigating whether a personal trainer who died in a home invasion (pictured) visited the same gym as the person whose house he broke into Bradley Soper, 35, died after he made his way into a Harrington Park home, in Sydney's south-west and became involved in a fight with homeowner Johann Schwartz, 44 (pictured), on Sunday morning 'One of the lines of inquiry we’re looking into is if the two men are known to each other,' a police source said. One trainer said he was certain the pair would've known 'each other by sight'. Soper had worked at numerous gyms across the CBD over the past three years. The publication understands Soper had worked at Snap Fitness on George Street and Lift Performance Centre in Redfern. While Soper was dubbed Asia's Strongest Man in 2017, Mr Schwartz reportedly had a reputation as the 'world's strongest IT nerd' at the CBD gym. Weeks before his death, Soper set up in a one-bedroom flat in Oran Park, not too far away from Mr Schwartz. On the fateful night of the home intrusion, Soper is believed to have walked barefoot along the Harrington Park and Oran Park streets before he accessed the business analyst's house through an open garage door. He is reported to have flung objects around the house before Mr Schwartz's dogs barked and woke him up. The homeowner is said to have found Soper crouching behind a sofa before the pair became involved in a fight while Mr Schwartz's wife and two-year-old daughter stayed upstairs. Soper is believed to have died after he became locked in a chokehold. The revelation that police are investigating the pair's possible ties comes after Soper's father lamented the loss of his son. The revelation detectives are investigating the pair's possible ties comes after Soper's father lamented the loss of his son (Brad Soper pictured with ex-girlfriend Kaisha Gambell) Mr Soper said he was at a loss to explain why his son broke into Mr Schwartz's family home and ransacked it in a 'zombie-like state' His devastated dad Raymond Soper told Daily Mail Australia his son's mental state deteriorated late last year when he split from his long-term lover Kaisha Gambell. 'He hadn't taken it well at all, he still had a broken heart', Mr Soper said. 'They had been going out for well over 12 months, I'd say. We met her and she was a very nice girl.' Mr Soper said he was at a loss to explain why his son broke into Mr Schwartz's family home and ransacked it in a 'zombie-like state'. 'All I can say is it was all out of character for Bradley. We feel that he's had some sort of a breakdown or something,' Mr Soper said. 'There's no way he would go into anyone's place intentionally, there's just no way.' Soper and Ms Gambell, a lawyer, lived together up until they split. The couple travelled together to India and Finland for his bodybuilding contests, and even bought a puppy. Friends and relatives of Ms Gambell said she had been left shocked by the death of her ex-boyfriend and was too distraught to comment. Soper and Ms Gambell, a lawyer (pictured), lived together up until they split Read more: Share or comment on this article: Sorry we are not currently accepting comments on this article.All rights reserved for this news site dailymail and under his responsibility