A Bollywood superstar's appearance at the Edinburgh Film Festival could be a target for ticket touts, festival organisers fear.

Shah Rukh Khan - nicknamed the "King of Bollywood" - is to discuss his career on stage, but alarm bells were raised when a caller tried to buy all 200 remaining tickets.

Any touting could stop a lot of other people buying tickets

Spokeswoman UGC Cinema

The festival has now limited ticket sales to four per person to try to stop touts making bulk bookings and exploiting the huge demand by selling them on at inflated prices.

Khan, 36, is one of the biggest names in Indian cinema, and has been dubbed "the Indian Tom Cruise".

"We knew it would be huge but we never thought someone would try and buy all the remaining seats," a spokeswoman for the Edinburgh International Film Festival said.

"We've had some block bookings already from schools and groups of people but we are now looking into those to check they were legitimate."

Khan's latest hit was romantic epic Devdas

Khan, who has starred in almost 50 films and runs his own production company, will be speaking to about 500 people about his fellow Bollywood stars and the state of the Indian film industry.

The UGC cinema, where the talk will take place on 24 August, expects to be besieged by fans.

"Any touting could stop a lot of other people buying tickets," a spokesman for the cinema said.

Three of his films - Asoka, Dilwale Dulhania Le Jaayenge and Kabhi Kaushi Kabhi Gham - are being screened during the festival.

Khan has picked up a string of awards during his career, and filmed one of his biggest hits, Kuch Kuch Hota Hai, in Scotland in 1999.