Ryan Zinke, the secretary of the Department of the Interior. Andrew Harnik/AP

The Interior Department spent about $139,000 for construction on an office door.

When asked about the details of the construction project, Interior Secretary Ryan Zinke didn't respond.

Zinke has been criticized in the past for questionable spending of taxpayer money.

WASHINGTON (AP) — Records show the Interior Department spent nearly $139,000 last year for construction at the agency that was labeled on a work order as "Secretary’s Door."

A spokeswoman for Interior Secretary Ryan Zinke did not provide answers Thursday to questions about whether changes had been made to a door in the secretary’s office.

Records show the Maryland contractor that performed the work, Conquest Solutions LLC, has done several renovation projects at federal buildings. A man who answered the phone at the company Thursday hung up when a reporter asked about Zinke’s office.

Zinke is one of several Trump Cabinet officials under scrutiny for questionable spending. He spent $53,000 on three helicopter trips last year, including one to go on a horseback ride with Vice President Mike Pence.