New Delhi: The Enforcement Directorate (ED) on Wednesday issued a show cause notice against Pakistani singer Rahat Fateh Ali Khan in connection with an alleged foreign exchange violation case. The Singer has been accused of smuggling illegal foreign currency in India for three years. According to report, the singer had got $340,000 (Rs 2.42 crore) through illegal means of which he reportedly smuggled $225,000 (Rs 1.6 crore). ED has issued Khan a notice and has sought his response regarding Rs 2.61 crore under scanner. If dissatisfied with his response, the ED can slap Khan with a 300% penalty. In case of its non-payment, a lookout notice is likely to be issued against the Khan and he’d thereby be forbidden to perform anywhere in India. Earlier, in 2011 also Khan has been embroiled in controversy related to illegal currency. In 2011, he was found with undocumented $125,000 (Rs 89.1 lakh) at Delhi’s Indira Gandhi International Airport. Rahat Fateh Ali Khan who is a native of Pakistan's Faisalabad has catapulted to fame in India after his super-hit song Jiya Dhadak Dhadak. Hee has sung several popular tracks for blockbuster films. His songs are popular chartbusters in Hindi movies and also in Pakistan.