The expected extension in service of Chief of Army Staff General Ashfaq Pervez Kayani has been challenged in the Islamabad High Court. A private TV channel reported on Sunday that a petition filed in the IHC pointed that the age of the incumbent COAS had crossed 60 years as on April 20, 2012. If the government extended his service, it would be unconstitutional and illegal, therefore, the COAS should be removed from his position, the petition said. IHC Chief Justice Iqbal Hameedur Rehman will be hearing the petition.