Two people have been hospitalised and Brisbane’s CBD evacuated following a suspected chemical leak. A number of people reported feeling unwell in a building on Mary St about 11.20am on Monday. The Queensland Ambulance Service said the suspected chemical leak caused at least four people to experience symptoms, including headaches. Know the news with the 7NEWS app: Download todayIt is still unclear what chemical was involved, said Queensland Fire Department. The area has been evacuated while firefighters continue testing at the scene.