An explosion has been reported at a chemical plant in China's eastern province of Shandong.Large flames can be seen from the site of the blast in Zibo County. There are so far no reports of any casualties.The People's Daily said a warehouse at the Runxing Chemical plant exploded and firefighters are at the scene.There is a residential area about 1km from the plant. Earlier this month blasts in the northern city of Tianjin killed at least 116 people.Saturday's blast took place near the city of Zibo. It is not yet clear if homes in the area have been damaged.