Breaking: Sistema founder pulls out of London press conference

Message just received:

We are very sorry to inform you that Maestro Jose Antonio Abreu will not attend the press conference announced for Saturday 7 June 2014, 12 noon, at St Paul Pavilion Room, Level 6, Southbank Centre.

The press conference will go ahead with:
Christian Vasquez, conductor of the Teresa Carreno Youth Orchestra
Eduardo Mendez, Director General of Fundacion Musical Simon Bolivar (El Sistema)
Gillian Moore, Head of Classical Music at Southbank Centre
Shân Maclennan, Creative Director of Learning & Participation at Southbank Centre

Please receive the apologies of Fundacion Musical Simon Bolivar for this inconvenience.

No reason has been given. Could it be that Maestro Abreu did not want to face independent questioning about his political allies in Venezuela?