Bielefeld (dpa / lnw) – Chlorine gas was probably released at the Kunsthalle in Bielefeld due to a defect in a filter system. Due to a leak in the system, which supplies a well, a mixture of chlorine water escaped in the second basement of the building on Friday, said a spokesman for the fire brigade. The danger was averted by the emergency services. According to initial information from the police, two people were injured. According to the fire department, emergency services assessed people on site, but they did not have to be taken to a hospital. Around 80 firefighters were on duty. According to the police, there were traffic restrictions in the area of ??the Kunsthalle during the operation on Friday afternoon, which also affected public transport.