VICTORIAN premier Denis Napthine has ordered an urgent examination of walls similar to the one that killed Melbourne siblings Alexander and Bridget Jones, and an unidentified woman in her 30s. The wall collapse this morning claimed a third victim, 18-year-old Bridget Jones, who died from injuries sustained in the freak accident on Thursday. The Victorian government has ordered the building commission to examine similar walls around the state. "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. Victoria Police will also complete an investigation, as will WorkSafe and Grocon, the owner of the site. Bridget's death this morning prompted friends and well-wishers to flood a Facebook tribute page to pay their respects and express disbelief. "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.