A blaze at an all-night rave in an Amsterdam warehouse killed one and injured six on Sunday, the Amsterdam Fire Brigade said. The fire broke out between 7 and 8 a.m. when several hundred party-goers were still inside the building at an industrial estate occupied by squatters. "The firemen found one deceased victim inside. Six have been taken to hospital with severe burns as well as breathing problems," said Fire Brigade spokesman Kees Jongh. He had no further details on the victims or how the fire started. A thick column of smoke could be seen from many parts of Amsterdam. Fire fighters were at the scene with 15 fire engines and other vehicles and still trying to control the blaze by mid-morning, Jongh said. Raves are popular in Netherlands, often filling an entire stadium with over 10,000 party-goers attending.