In fresh trouble for the head of crisis-ridden Kingfisher Airlines, Vijay Mallya, the special court for economic offences here has issued summons to him on an income-tax department criminal case for not remitting to government the tax deducted at source from salaries of its employees.

Having failed to receive their May salary as assured by the Kingfisher management, the airline pilots have now threatened to approach DGCA if they did not meet the commitment by today even as the regu