Internet mogul Kim Dotcom has again vowed to "fight for internet freedom" in a series of tweets sent out.

Mr Dotcom has battled a years-long court case over copyright laws, with him being accused of causing the loss of millions of dollars to copyright owners in the US through the file sharing site he founded Megaupload.

Earlier this year, it was revealed he could be extradited to the US to face trial.

He was indicted by US Grand Jury in 2012 over the allegations.

"I will continue to fight no matter what it takes," Mr Dotcom said.

"No matter where the journey will take me I will defend internet freedom, I will fight for your rights and I will stand up to the injustice brought upon us by the deep state."

Mr Dotcom also joked that he had been advised by lawyers that "an insanity defense won't work in a copyright case".

Mr Dotcome has argued extradition is unlawful in this case because a copyright infringement in a civil case rather than a criminal case.