Four Pakistan's cricket stars have been issued with tax demands for more than 800,000 dollars to be paid within 15 days. Pak Revenue officials said that the four players had not paid tax on their income from their annual contracts, advertisements and other earnings. Pakistan's cricketers are among the highest earners in the country. Less than two per cent of Pakistan population is paying taxes on their income. Officials said the number of other Pakistan players have been warned about tax evasion.