Japan's nuclear crisis escalated today as two more blasts and a fire rocked a quake-stricken Fukushima atomic power plant, sending radiation up to dangerous levels. Prime Minister Naoto Kan said, and his chief spokesman announced in a Press Conference that radiation around the Fukushima No.1 plant on the eastern coast had risen considerably and was now high enough to endanger human health. In Tokyo, authorities also said that higher than normal radiation levels had been detected in the capital but not at harmful levels.Kan warned people living up to 10 kilometres beyond a 20 km exclusion zone around the nuclear plant to stay indoors. He said the fire, which was later reportedly extinguished, was burning in the plant's number-four reactor.The crisis at the ageing Fukushima plant has escalated daily after Friday's quake and tsunami which knocked out cooling systems. On Saturday an explosion blew apart the building surrounding the plant's number-one reactor. On Monday, a blast hit the number-three reactor, injuring 11 people and sending plumes of smoke billowing into the sky. Early today a blast hit the number-two reactor. That was followed shortly after by a hydrogen explosion which started a fire at the number-four reactor.Meanwhile, police said today the official death toll has risen to 2,414. However, officials say at least 10,000 are likely to have perished. Supermarkets are open but shelves are completely empty. Many children are sick in this cold weather but pharmacies are closed. Emergency relief goods have not reached evacuation centres in the city. Officials have already evacuated 210,000 people in the exclusion zone around the crippled plant.Further north in the region of Miyagi, rescue teams searching through the shattered debris of towns and villages have found 2,000 bodies.Tokyo stocks, which were punished Monday when the markets reopened, sending indexes around the world sliding, plummeted another 12 per cent by early afternoon today.Leading risk analysis firm AIR Worldwide said the quake alone would exact an economic toll estimated at between 14.5 billion dollars and 34.6 billion dollars.