New Delhi, July 18 (IANS) Prime Minister Manmohan Singh has mourned the death of Bollywood superstar Rajesh Khanna, who passed away Wednesday after a prolonged illness.

I convey my heartfelt condolences to the members of the bereaved family and countless fans and admirers of Rajesh Khanna, Manmohan Singh said in a twitter message posted by his office.

Khanna, known as the first superstar of Hindi film world, had dabbled in politics as well. He was Congress MP from the New Delhi constituency from 1991-1996.