Disney star Billy Unger is suing his father over allegations he siphoned money from the actor's earnings when working as his manager.

The National Treasure: Book of Secrets actor filed court documents claiming William Unger mishandled $400,000 (£250,000) of his money last year (14).

In documents obtained by Tmz.com, Unger, 19, alleges his father took a 33.3 per cent commission, well above the industry standard of 10 to 20 per cent, and also claims his dad used $120,000 (£75,000) of his money to take his girlfriend on a luxury vacation and pay her living costs.

Billy is asking a judge to order the repayment of the money plus damages.