The Oscar-winning actress issued a grovelling apology in October (11) amid a storm of criticism of her presence at the event, and she promised to hand her personal appearance fee to charity.

Exiled former Chechen leader Akhmed Zakayev has written to the Boys Don't Cry star demanding she provide details of her payment and the charities she's handed it to - but Swank has declined the request.

A spokeswoman for the actress tells The Hollywood Reporter, "Over the last four months, Hilary has been working directly and privately with various human rights organisations and other charities - giving both her time and financial resources.

"At the request of such organisations, and consistent with Hilary's longstanding practice of donating anonymously, she will not be publicly acknowledging her contributions and efforts."

Swank was slammed by officials at Human Rights Watch for partying with Kadyrov in October (11) amid claims he is responsible for torturing his citizens.