U.S. Sen. Angus King is calling for a federal investigation into the mass cancellation of contracts in the Department of Veterans Affairs.

King, a Maine independent, and Sen. Richard Blumenthal, D-Conn., are asking the department’s Office of Inspector General to look into the Trump administration’s cancellation of VA contracts at the direction of the Department of Government Efficiency.

The senators, both members of the Senate Veterans’ Affairs Committee, said in a letter to the office on June 13 that their staff have analyzed more than 650 VA contracts “terminated for convenience” between Jan. 20 and May 30 and found that a majority of them appear to be for services directly for veterans or critical VA operations.

The contracts include more than two dozen for medical supplies and equipment; four for cancer and tumor registries; more than 110 for construction and infrastructure services to include maintenance of boilers; prosthetics, including the conversion of a van for a veteran, and more than 15 nursing home care contracts, according to the letter.

“In addition, to date, no evidence has been provided by VA that any thoughtful contingency planning was put into place before these services were cancelled,” the senators wrote.

Other canceled contracts that were leaked to Congress and the media were for veterans services including suicide prevention and mental health treatment; disability claims processing, exams and auditing; radiology services; and outreach regarding burial benefits and health care services.

Public records show some previously canceled contracts have been restored, though new contracts are being canceled every week, the senators said.

Pete Kasperowicz, a spokesman for the  VA, said the the department “is reviewing all of its 76,000 active contracts to ensure each and every one of them benefits Veterans and is a good use of taxpayers’ money.”

“Decisions to keep, cut, or descope contracts are based on careful and methodical multi-level reviews by VA employees, including career subject-matter experts who are responsible for the contracts, as well as VA senior leaders and contracting officials,” he said in an email. “As far as we know, this sort of review has never been done before, but we are happy to set this commonsense precedent.”

King and Blumenthal have asked the Office of the Inspector General to review the impact of the cancellations, the use of artificial intelligence or algorithms to guide decision-making, the extent of VA subject matter experts in the decision-making and the existence of any contingency plans to replace services prior to contract cancellations.

King previously expressed frustration at trying to find out information about whether cuts to VA jobs would impact Togus VA Medical Center in Augusta.

In a news release Tuesday, his office said that despite multiple requests, VA Secretary Doug Collins has refused to send Congress a complete and updated list of VA contracts canceled or proposed for cancellation, despite touting the list in public hearings and on social media.

The Office of the Inspector General did not immediately respond to questions Tuesday about whether it had received the letter from the senators and if it would be investigating the issues they raised.

This story was updated at 9 a.m. on June 25 to include a comment from a U.S. Department of Veterans Affairs spokesperson.