Former Blink-182 bassist Mark Hoppus has sued a father-and-son business, alleging they pocketed his investment in a venture to install automated checkout machines at McDonald's restaurants.
The lawsuit in San Diego Superior Court says Ed and Jeff Mitchell lined their pockets "to the tune of over $US1.5 million" ($A1.7 million).
It alleges their company - Missicom LLC of San Diego - does not have any contracts to install the machines to take orders and collect payments at McDonald's or anywhere else.
Hoppus, currently a member of the pop-punk band Plus-44, invested $US600,000 ($A680,000) in Missicom in October 2003, according to the complaint.
The lawsuit says the Mitchells raised nearly $US3.4 million ($A3.9 million) and solicited millions of dollars from "prominent, well-known figures".
Hoppus's lawyer, Howard King, said in a news release that other investors included golfer Phil Mickelson and former Blink-182 members Tom Delonge and Travis Barker. After Blink-182 disbanded, Hoppus and Barker formed Plus-44.
The lawsuit alleging gross negligence and breach of fiduciary duty seeks unspecified damages against Missicom and the Mitchells.
It amends a complaint that Hoppus filed in 2006 against former business manager Louis Tommasino over the soured investment, which is scheduled for trial on September 8.
Lawyers for Missicom, the Mitchells and Tommasino did not immediately respond to phone messages.