The top Democrats on the House and Senate Judiciary committees are calling on Attorney General Pam Bondi to investigate whether departing Homeland Security Secretary Kristi Noem lied under oath before Congress.

Sen. Dick Durbin, D-Ill., the ranking member on the Senate panel, and Rep. Jamie Raskin, D-Md., the top Democrat on the House committee, sent a referral to Bondi on Monday saying Noem may have violated statues prohibiting perjury and making false statements to Congress when she appeared before their committees on March 3 and March 4.

“A number of her statements appear to violate criminal statutes prohibiting perjury and knowingly making false statements to Congress,” the lawmakers wrote, focusing on her remarks that the department hadn’t violated court orders related to its immigration enforcement.

President Donald Trump fired Noem earlier this month after her testimony and tapped Sen. Markwayne Mullin, R-Okla., to replace her. Mullin will need to be confirmed by his Senate colleagues before taking over DHS and will appear before the Senate Homeland Security & Governmental Affairs Committee on Wednesday.

The Department of Justice did not immediately respond to requests for comment on Monday.