Teens killed by wall were on way to MCG The teenage siblings were walking to meet their father for Carlton's first AFL game of the season when a brick wall collapsed killing Alexander Jones and critically injuring his sister. Bridget Jones, 18, died in hospital from head injuries early on Sunday after being struck by a 15-metre long section of wall three days ago. Her 19-year-old brother died at the scene in inner-Melbourne as he shielded his sister from the falling bricks. A Mount Waverley woman in her 30s was also killed but has not yet been formally identified. Ian and Sue Jones said they were devastated by the loss of their two children, whom they described as kind hearted and respectful. "They had a wide network of friends and yet were both very close to each other," they said. Alexander and Bridget were keen Blues supporters and were on their way to meet their father for the first Carlton game of the season when this terrible tragedy happened. Four separate investigations are being held into the wall collapse including one by Victoria Police and others by the Building Commission, WorkSafe and the site's owner, Grocon. The Victorian government has ordered a state-wide audit of crumbling facades on building sites. "This is a terrible tragedy and our thoughts and prayers are with the family," Premier Denis Napthine said. This incident will be fully investigated by the coroner and other relevant authorities. Both Alexander and Bridget were studying arts at the University of Melbourne. Alexander planned to study law and perhaps go into politics, while Bridget was considering becoming a teacher. "They loved sport, particularly tennis which they played since they were five, and all different genres of music," their parents said. Bridget's death at 6.30am (AEDT) in the Royal Melbourne Hospital prompted friends and well-wishers to flood a Facebook tribute page to pay their respects. "Hard to find meaning in life when things like this happen," one friend wrote. Condolences to family and friends. Stay strong for each other, they are together and at peace now. The siblings' friends continued to gather at the scene of the tragedy on Swanston Street in Carlton Sunday. Flowers and messages of support were left at the makeshift shrine, including "Zander for PM" scrawled across the pavement in chalk. Alexander, known to his friends as Zander, was a former school captain at Montmorency Secondary College. School principal Allan Robinson said the Montmorency community was shattered. "This is a loss of enormous proportions," he said on Saturday. He was an incredible young man, thoroughly respected and admired by every student and every member of staff at Montmorency Secondary College.