A building has collapsed in central Madrid, on No. 4 Hileras Street of the Spanish capital. So far, four people are reported missing according to Madrid city officials, three men and one woman. The number of injured remains unclear. One of the injured was taken to hospital by ambulance with apparently serious bone fractures. At the scene, 11 units of the Madrid Fire Department were working following the partial collapse of several floors in the building, which was undergoing renovation.