Winning jocket Tony McCoy said: "It's great for Jonjo and JP McManus. He's really delivered today. He was off the bridle the whole way and when I missed the third-last I thought my chance had gone."
Dual winner Kauto Star was pulled up at the ninth fence by Ruby Walsh after losing his place.
More top news
He has asked his followers for help in tracking the man down.
The president said it was a “very sad day for journalism”.
A summit has been pencilled in for February following last year’s icebreaker in Singapore.