Henri van Breda suffered 'self inflicted wounds ' following attack on family . Parents and brother were killed and sister suffered severe head injuries . Family were attacked in upstairs bedrooms of their Cape Town home . Henri called for help three hours after attack and said he was in bathroom . Claimed the killer hurled the axe at him and knocked him unconscious . Police have arrested a man who they believe is responsible but are not sure if it's linked to the case or unrelated.
Henri van Breda suffered 'self inflicted wounds ' following attack on family . Parents and brother were killed and sister suffered severe head injuries . Family were attacked in upstairs bedrooms of their Cape Town home . Henri called for help three hours after attack and said he was in bathroom . Claimed the killer hurled the axe at him and knocked him unconscious . Sister survived the attack and both are set to inherit parents ' £10m fortune . It has been claimed that police have enough information to make an arrest .