Mona Dotcom is the target of US attempts to access her husband Kim Dotcom’s assets with court papers filed in December that seek to define the extent of her marital property under a matrimonial property order that she is yet to seek in New Zealand.

Kim Dotcom’s millions have been frozen after his January 2012 arrest. He and three co-accused are still awaiting extradition to the United States to face charges of copyright infringement, money laundering and racketeering in relation to the now-defunct Megaupload file sharing website.

In one thread of the long-running case, US authorities are seeking forfeiture of the seized assets – which include funds in bank accounts, vehicles and other valuables – but Mrs Dotcom says she has a 50 per cent marital interest in some of the property.

Action is now being taken in the US courts to have her claim thrown out based on her “lack of standing”.

In court documents filed at the end of December, US authorities argue that Mrs Dotcom’s interest can’t be quantified until she gets a New Zealand court order defining the extent of her marital property, and she hasn’t made any moves to get such an order.

Further, it’s argued that Mrs Dotcom has already received assets “far in excess of the claim which she seeks to assert in this litigation”.

Dotcom has taken to Twitter to hit out at the latest court action.

“Frustrated US DOJ prosecutors attack my estranged wife Mona, her assets & the future of our children. Don’t worry. She’ll respond,” he tweeted on Tuesday.

“What the US Govt is doing reminds me of what I learned in school about Nazi Germany. Ironic, Hollywood is run by mostly Jewish entrepreneurs,” he said in another tweet.

Kim and Mona Dotcom separated in September last year, but she continues to live in a property adjacent to Dotcom’s Coatesville mansion.

NZ City