A fire erupted in an Amsterdam apartment building early Friday morning following an explosion. The blaze originated in a gym located within the building, causing significant damage to the facility. Approximately 400 residents were evacuated as a precautionary measure while firefighters worked to contain the flames. Seven individuals sustained injuries as a result of the incident, though the extent of those injuries remains unclear. Authorities are currently investigating the cause of the initial explosion and subsequent fire. Emergency services responded quickly to the scene and successfully extinguished the blaze. The evacuated residents are being assisted with temporary accommodation.