Senior Pakistan Tehreek-e-Insaf leader Asad Umar was shifted to a hospital in the wee hours of Thursday, his party`s spokesperson said. MPA Khurram Sherzaman said that Umar, after arriving at Karachi`s Jinnah International Airport from Islamabad, was immediately taken to a private hospital as he was facing severe headache due to high blood pressure. However, according to the family sources, Umar, at the present time, is not seriously ill and it is nothing severe.