Cape Town - The parents of Henri van Breda, 20, who survived last week's gruesome axe attack on his family at their Stellenbosch home relatively unscathed, had reportedly been concerned about his health. According to Netwerk24, Henri had a brain scan at an Australian hospital last year, but the results were negative and no further tests were carried out. A family friend also told Sunday newspaper Rapport that Henri wanted to spend last year in Canada but he had to abandon these plans due to problems with his health.However, family spokesperson Ben Rootman told Netwerk24 on Monday that rumours about Henri's state of mental health were based on speculation and there is no way to verify this.Drug rumoursRootman did confirm that Henri had a brain scan in the Royal Melbourne Hospital last year. But he said the family had no knowledge of any rumours relating to drug use. Netwerk24 spoke to a domestic worker at the De Zalze golf estate where the family lived, who said she ran into Henri in the street in October last year. He allegedly shouted at her and made inappropriate innuendos, leading her to believe he was under the influence of drugs.Henri's parents, Martin, 54, and Theresa, 54, and older brother Rudi, 22, were killed in the attack, while his younger sister, Marli, 16, is reportedly in a stable condition in hospital. Henri survived and made a call to emergency services early on Tuesday morning. He is currently staying with an uncle in Stellenbosch. Meanwhile, the Times reported that Henri was taken back to the crime scene last Friday, but police would not say why. It is believed to be the first time he has returned to the family home since the attack. Forensic investigators are reportedly still working on the scene. Western Cape police spokesperson Lieutenant Colonel Andrè Traut told News24 on Monday morning that there are no new developments in the case. "Although progress is being made, there is no detail that can be announced at this stage," he said.- To read more about these gruesome murders, click here.