Chinese state media report the death toll from powerful explosionsin the Chinese port of Tianjin has risen to 104.It says at least 21 firefighters were among those killed.Chinese officials ordered an immediate evacuationnear the site of the huge fire and explosions Wednesday night.The blasts happened at a chemical storage buildingin an industrial neighborhood in the northeastern city.The Beijing News on Saturday saidall people within a three-kilometer distance of the warehouseare being forcibly removed from the area.Officials reportedly are concernedabout a possible poisonous chemical spread.The newspaper reported that police saidsodium cyanide was discovered east of the site.The chemical can kill.A team of more than 200 military nuclear and biochemical specialistshas been searching the area for possible dangerous chemicals.The official Xinhua news agency said anti-chemical warfare troopsrescued a man Saturday 50 meters from the blast center.The People's Daily said the 50-year-old manwas rescued from a container around 2:00 p.m. local time,nearly three days after the explosion.Chinese Central Television reported that rescue operations were suspended Saturdayafter a new fire broke out.The broadcaster said a car damaged during the explosion caught fire.Hundreds of people remain hospitalized.Local officials have discovered several poisonous materials near the explosion site.However, they have repeatedly saidthat air and water quality in the city remains normal.Investigators still do not know what caused the explosions,which sent huge fireballs into the night sky.The powerful shockwaves also shattered glass several kilometers away.