LAHORE - Justice Ijazul Ahsan of the Lahore High Court on Monday issued notice to the Federation for July 7 on a petition challenging functions and powers of chief commissioners Inland Revenue, commissioners Inland Revenue, and commissioners Inland Revenue (Appeals). The judge directed the Attorney General of Pakistan to assist the court in the proceedings. Petitioner-lawyer Ch Anwa-arul Haq advocate contended that Inland Revenue authorities holding their offices throughout Pakistan were exercising their powers unlawfully under the Income Tax Ordinance 2001, Sales Tax Act 1990 and Federal Excise Act 2005. The petitioner said that the President of Pakistan promulgated the Finance (Amendment) Ordinance 2010 for the purpose of harmonisation of sales tax, income tax and federal excise taxes, and integration of the service groups of more than 500 senior level tax authorities into one Inland Revenue Service. Despite the promulgation of Finance (Amendment) Ordinance 2010, the respondents were working in their separate offices across the country like before and thus causing loss to the national exchequer, he added. The petitioner submitted that the respondents might be asked to explain under what authority of law they claim to exercise powers and are performing functions. He prayed that he be granted interim relief till the final decision of the titled petition, the respondents might also be restrained from exercising the powers and functions as Chief Commissioners Inland Revenue, Commissioners Inland Revenue and Commissioners Inland Revenue (Appeals).