The national police chief yesterday rejected claims rebellion had spread to Beijing despite a warning to the capital's taxi drivers to monitor Uygurs and Tibetans. Public Security Minister Tao Siju also denied rumours five bombs had been found in the city where officials have gathered for the National People's Congress and People's Political Consultative Conference. 'I did not receive any information about bombs in Beijing,' he said. '[A spread of independence activism in the capital] is impossible.' Mr Tao played down the bus bombings in the Xinjiang capital Urumqi last week, saying they were the work of 'a few local young people'. 'Only a few people were involved,' he said. 'The case has already been cracked and the people arrested.' The Minister gave an assurance about order in the capital, saying security was 'still guaranteed'. But taxi drivers said they had been asked to pay special attention to Uygurs and Tibetans during the parliamentary conference. One said when meetings started, the Public Security Bureau warned drivers not to touch parcels left by passengers and to be beware of suspicious customers. Another driver, Zhao Yinlong, said: 'To stay away from troubles I simply turn down business from Tibetans and Uygurs. You can always tell from their appearance. 'If a Tibetan or Uygur waves at my car, I just pretend I do not see them.'