A forest fire on the slope of Mount Sumbing, Tamanggung District, Central Java Province, has spread to wider area. "It happens that the weather is not conducive to put out the fire. The fog is not going down and the wind is strong," ANTARA quoted Juni Junaedi of the Kedu Utara Forestry Company as saying here on Wednesday. The fire was earlier spread to Mangli in Magelang but it was successfully extinguished, he said. Some 20 hectares of forest area have been affected by the fire in Temanggung. "The coverage can increase because the fire is still going on and the wind blows strongly," he said. The forestry company has mobilized 16 personnel to put out the fire with the assistance of several local people living surrounding the forest area.