Senator Elizabeth Warren is demanding an investigation into SpaceX after Elon Musk admitted that he blocked Ukraine from expanding its private Starlink satellite network to attack Russian warships off the coast of Crimea, Bloomberg reports.

"Congress needs to investigate what happened and whether we have adequate tools to ensure that foreign policy is conducted by the government, not by one billionaire," Warren said.

As a member of the Armed Services Committee, she said she is also pushing for the Defense Department to examine the contractual relationship with the company.