California’s high-speed rail program faces new scrutiny after an audit found nearly $600,000 in questionable expenses tied to consultants. CBS News reports that investigators obtained receipts behind the findings, showing that some late-night trips were billed to taxpayers.

According to CBS and the New York Post, the receipts include trips to and from the CEO’s home in Folsom and other local outings, such as rides to bars and restaurants. The coverage says that the circumstances and connections to the program’s leadership were not previously disclosed, prompting questions about the legitimacy of the charges.

Outlets describe the issue as a matter of potential waste and lack of transparency revealed through the state’s oversight process. They also note that representatives face pressure to explain the spending patterns highlighted by the watchdog, including the timing and purpose of the trips.