US Attorney General Merrick Garland on Thursday issued a moratorium on federal executions while a review of policy and procedures is pending to address “serious concerns” about the practice.

The move is a sharp break from the policies of former president Donald Trump’s administration, which carried out a record number of executions.

However, no federal executions have occurred since President Joe Biden, who is known for his opposition to capital punishment, was inaugurated.

“Serious concerns have been raised about the continued use of the death penalty across the country,” Garland wrote in a two-page statement announcing the moratorium.

These include “arbitrariness in its application, disparate impact on people of color, and the troubling number of exonerations in capital and other serious cases.”

No federal executions will take place “while a review of the Justice Department’s policies and procedures is pending,” he wrote.