Michael Jackson is suing his former accountants, claiming they made unauthorised business deals while charging him millions of dollars.
Mr Jackson appeared at a London awards ceremony last month
The singer alleges negligence and breach of trust against the firm in a suit filed in Los Angeles.
He is claiming unspecified damages and an audit of money paid to Bernstein, Fox, Whitman, Goldman & Sloan.
The suit also said the firm - which has not commented on the claims - did not keep him informed about money matters.
In August, Mr Jackson parted company with his lawyers, who claimed they they had not been paid for representing him in a case brought by a finance company.
However, the singer claimed he had fired New York-based Wachtel & Masyr.
Finance company Prescient Acquisition Group has been suing the singer, saying it is owed $48m (£24.5m).
The firm alleges it helped Mr Jackson find investors to help pay off a $272.5m (£139.1m) debt, and arrange $537.5m (£274.5m) in financing to secure the Beatles' back catalogue.
Mr Jackson is trying to rebuild his music career after being acquitted of child abuse charges in California in 2005.