On 10 June 2019, a hydrogen filling station in Norway caught fire. While several media talked about an explosion, the electrolyzer manufacturer involved, Nel, stated that leaked hydrogen gas caught fire in the open air, causing a shock wave. According to police reports, two people were slightly injured in this incident in Sandvika, west of Oslo, when the airbags of their cars deployed. After initial tests, it was said a few days later that hydrogen had escaped through a leak in the high-pressure storage system and had ignited. However, no tank had burst.