The cause of the collapse is yet to be determined, and WorkSafe has opened an official investigation. A tradesman working on a site next door said it was 'horrible' to see the aftermath of the incident. If you're fascinated by everything around you, we can help you to develop the knowledge & skills you'll need to make tomorrow better. WA Police Commander Mike Bell says authorities are yet to determine what caused the roof to suddenly give way. Pictured: People at the scene, Two men in their 20s are in a critical condition after the structure caved in on Tuesday, Other tradies working on the job site were sent home for the day, but gathered across the road to watch the aftermath, Other tradies on the site stuck around on the other side of the road after they were sent home for the day, Up to 100 staff were working on the building site at the time of the incident, and were promptly evacuated, Commander Mike Bell of the WA Police Force speaks to the media in front of the scene of a collapsed building at Curtin University, Mick Buchan, State Secretary of the CFMEU talks to the media, An air of silence fell among the workers as they watched on in horror while emergency services scoured the site, It's understood the five-storey building was under construction when it collapsed, Tradies watched on in horror as emergency services arrived and began searching the rubble for survivor, Initial reports suggest a glass ceiling fell through the site, crushing a construction vehicle in the process, Tradies watched on in horror as emergency services arrived and began searching the rubble for survivors, St John's Ambulance, WA Police and firefighters are all at the scene, A close up of the scene of a collapsed building at Curtin University, in Perth, A spokesperson for St John's Ambulance said they did not know how many were injured but several crews were at the site, By Brittany Chain and Eliza Mcphee For Daily Mail Australia, 06:18 13 Oct 2020, updated 10:20 13 Oct 2020, Four tradesmen are rushed to hospital with head and back injuries after a wall collapses at a building site in Sydney, More than 3,000 are evacuated amid fears a new luxury 34-storey apartment building in Sydney's Olympic Park will COLLAPSE - closing a train station and several roads on Christmas Eve. Another man who claims his grandson was working at the same job site said the victim was on the fifth floor of the building before it collapsed. Curtin delivers Western Australia's only on-campus programs in medical imaging and radiation therapy. You will complete 45 weeks of clinical experience in hospitals, private practices and rural and regional sites. 'Keep in touch with your mates and your employer for further instructions when there will be a return to work,' a union representative told the staff. The building involved is reportedly the School of Design and the Built Environment, known as building 418. We’re proud to announce that Curtin has maintained our rank of second in the world for Mineral and Mining Engineering in the QS World University Rankings by Subject 2020. They were told to go home, but many of them stuck around and sat on a grass verge opposite the scene of the collapse. But according to Electrical Trades Union official Damian Clancy, it was an accident waiting to happen.