Khan, popular Bollywood playback singer, arrived here on a flight from Karachi and was intercepted by personnel from directorate of revenue intelligence acting on some prior information, official sources said.
They said the singer was carrying a huge amount of foreign currency which he did not declare to the immigration authorities. Two other persons accompanying him have also been detained, the sources said.
Khan is being questioned and the amount of the money is being ascertained, they said.
The 37-year-old, nephew of Pakistani singing legend Ustad Nusrat Fateh Ali Khan, was earlier too involved in a controversy when organisers of a concert in Gurgaon filed a police complaint against him in July last year for his failure to turn up for a show.
Khan has several hit numbers to his credit and had won the Filmfare Award for Best Male Playback Singer this year for Dil To Bachcha Hai Ji from the movie Ishqiya.
