President Donald Trump said Tuesday the federal government would not finance California’s high-speed rail project, escalating tensions over the state’s long-delayed infrastructure plan.

The government was already investigating how the state was spending a federal grant on the train project to connect Los Angeles and San Francisco.

President Donald Trump says the U.S. government will not pay for California’s high-speed rail project, fueling growing concerns that the bullet train will not have stable federal funding for the foreseeable future.