Islamabad (Agencies): The Pakistan officials have arrived at the Directorate of Revenue Intelligence office to help famous singer Rahat Fateh Ali Khan, who is being probed by the DRI officials after he was arrested at New Delhi's Indira Gandhi International Airport on charges of carrying undisclosed foreign currency on Sunday.

As an effort toward securing the release of the singer, Foreign secretary Salman Bashir had already discussed the issue with Indian high commissioner in Islamabad Sharat Sabarwal, urging the Indian envoy to ensure that "no official should misbehave with Rahat during interrogation".

Rahat was on his way back to Pakistan after attending concerts and award functions in India. Above $100,000 were recovered from the 15-member troupe.

Earlier, Pakistani high commissioner to India Shahid Malik was directed to "take immediate steps for securing release of Rahat" and "to provide necessary legal and other consular help to Rahat".

Malik was also directed to provide Pakistan with regular updates regarding efforts to resolve the case.

However, media reports said the Pakistan officials were denied access to the singer. The DRI officials said that they would be allowed to meet him after the completion of questioning.

"We are yet to establish any proper contact with the authorities in India although Rahat talked briefly with his wife and asked her to remain hopeful of a positive outcome," said Rahat's brother-in-law Asim Raza.

Rahat, the nephew of legendary singer Nusrat Fateh Ali Khan, is famous both in India and Pakistan.

Several of his hit songs from Indian movies are a rage on both sides of the border, for which he has won several awards, including the recent Filmfare award for Dil To Bacha Hai Jee.