<span style="color: black;">At least 46 people have been killed and dozens more seriously injured in a fire at a 13-storey tower block in southern Taiwan. A residential and commercial building in the city of Kaohsiung caught fire in the early hours of Thursday morning, the local fire department said.<br />''<br />''It took fire fighters more than four hours to extinguish the blaze. The fire department told media that 79 people had been taken to hospital, including 14 in a serious condition. The cause of the fire is unclear and investigators are at the scene.</span>