Why was a film crew shooting the fan frenzy outside Mannat?

Shah Rukh Khan at Mannat

While Shah Rukh Khan was greeting the crowds at Mannat on his birthday on Sunday, a film crew was spotted shooting the fan frenzy.

Shah Rukh Khan at Mannat on his birthday. Pics/Satyajit Desai

Turns out the footage will be used in SRK's upcoming film, 'Fan'. The film's director, Maneesh Sharma, sure knows how to make the best use of a situation.

The camera atop Mannat which was filming SRK's birthday celebration