Former Trump campaign manager"created cash out of thin air"and"got whatever he wanted,"the prosecutor said,including a $US15,000 ostrich coat.
Trump launched his new attack hours before his former campaign chairman,Paul Manafort,was due to go on trial on tax and bank fraud charges.
Paul Manafort's trial centres on his Ukrainian consulting work and will merely touch on the president's campaign. But the broader implications will unmistakable.
Paul Manafort has been treated like a"VIP"in jail,with a private bathroom and shower,a personal laptop and phone.
Manafort has his $10 million bail revoked pending trial after he was charged with witness tampering.
Former Trump campaign manager Paul Manafort and his long-time business associate were indicted on Friday on new charges they conspired to obstruct justice
This marks the first time that Donald Trump jnr's account of what unfolded during the meeting has been made public.
The new charges include bank and tax fraud,escalating a legal battle that started last year.