Awwal 08, 1432 / April 12, 2011, SPA -- Seven people were killed and another three injured after a residential building caught fire late Monday in east China's Zhejiang Province, local authorities said today. The fire broke out at 11:25 p.m. Monday on the third floor of a 7-storey residential building in Longgang Township, Cangnan County of Wenzhou City, Xinhua quoted a spokesman with the city fire department as saying. Fire fighters rescued four people trapped in it and extinguished the fire around 1:15 a.m. Tuesday. Six people died at the scene and one died later in hospital, according to the spokesman. Investigations into the cause of the fire are underway.