Speaking at the Justice Department on Friday, U.S. President Donald Trump vowed to hold accountable those who investigated him while he was out of office.

“Our predecessors turned this Justice Department into the Department of Injustice. But I stand before you today to declare that those days are over and will never return. They will never return,” President Trump said.

During his years out of office, the department twice indicted former President Trump for holding classified documents at his Florida estate and for attempting to overturn the 2020 presidential election. Both cases were dropped after President Trump won the election in November. The Justice Department cited its longstanding policy of not indicting a sitting president.

“Now, as the highest-ranking law enforcement officer in our nation, I will insist on and demand full and complete accountability for the violations and abuses that have occurred. The American people have given us a mandate, a mandate that very few thought was possible,” President Trump said.

The new US administration has fired the prosecutors who investigated President Trump during the administration of former President Biden and is reviewing the work of thousands of FBI agents who investigated some of his supporters who entered the Capitol on January 6, 2021.