Two people were treated by paramedics at the Credit Suisse building in Cabot Square in the Canary Wharf financial district. They were not taken to hospital. The building houses a Nuffield Health gym and a wellness gym. Firefighters arrived at the scene east of the capital shortly after 9 a.m. after a “chemical smell” was reported. Image: Emergency services at the point in east London. Photo: London Fire Department They found that a “mixture of chemicals has caused high levels of fumes and vapors” in the building, the London Fire Department said. Station crew Dave Hill, who is at the scene, said: “Crews scanned the building and found high measurements.” He added that the building has been ventilated and the level of fumes is being monitored by crews. People have been evacuated from the building for “precautionary measures,” he said. A spokesman for the London Ambulance Service said: “We have sent an ambulance crew, an emergency officer and our Emergency Response Team (HART) to the scene. “Our crews worked closely on the spot with colleagues from other emergency services. Our doctors treated two patients at the scene, who have not been taken to hospital. We have now been withdrawn.” Sky News understands that Credit Suisse staff have been allowed to return to their offices and the situation is now under control. Image: Two people were treated by paramedics at the scene. Photo: London Fire Department Second evacuation in London in less than a month This marks the second evacuation in the capital in less than a month. On March 23, people were forced to leave the Queen Elizabeth Olympic Park Aquatics Center in Stratford due to a chlorine gas leak. About 200 people were evacuated from the building and 29 were taken to hospital, including seven children. Emergency services responded to a “major incident” at the scene in Stratford and treated several people who were having difficulty breathing at the scene. It seems that people are placed in ambulances while others were wrapped in blankets. Chlorine gas can cause eye irritation and breathing problems if released into the air.