FILE - In this Wednesday, March 1, 2017, file photo, Baltimore Police Department Commissioner Kevin Davis speaks at a news conference in Baltimore to announce that seven Baltimore police officers who worked on a firearms crime task force are facing charges of stealing money, property and narcotics from people over two years. Baltimore Mayor Catherine Pugh and Davis worked closely with Justice Department investigators to scrutinize the city's police force and embraced a plan they crafted to overhaul the troubled department. (AP Photo/Patrick Semansky, File)
FILE - In this Wednesday, March 1, 2017, file photo, Baltimore Police Department Commissioner Kevin Davis speaks at a news conference in Baltimore to announce that seven Baltimore police officers who worked on a firearms crime task force are facing charges of stealing money, property and narcotics from people over two years. Baltimore Mayor Catherine Pugh and Davis worked closely with Justice Department investigators to scrutinize the city's police force and embraced a plan they crafted to overhaul the troubled department. (AP Photo/Patrick Semansky, File) Credit: Patrick Semansky

Baltimore’s mayor and police chief worked closely with Justice Department investigators to scrutinize the city’s police force and embraced a plan they crafted to overhaul the troubled department.

So they were surprised by the Justice Department’s sudden request Monday for more time to see how the proposed changes might conflict with the aggressive crime-fighting approach new Attorney General Jeff Sessions favors.

City leaders accelerated negotiations under the Obama administration to get the consent decree done before the change in administrations in Washington “because we know that a consent decree will make the Baltimore police department better both with crime fight and community relationships,” Police Commissioner Kevin Davis said Tuesday.

A consent decree binds the police commissioner and mayor, no matter who they are, “to getting those reforms enacted under a timeline that’s not necessarily our own,” he said. The department is already enacting reforms, Davis said, but change won’t come at the pace that it is needed without such an agreement.

“The reforms that cost money … are the things behind the scenes that consent decrees really mandate and they hold our feet to the fire,” he said.

Davis and Democratic Mayor Catherine Pugh believed the proposed agreement would repair public trust in the police while also quelling violence. They swiftly voiced their opposition to the requested delay, and pledged to press ahead with the business of transforming the police department, with or without a court-enforceable consent decree.

“Much has been done to begin the process of building faith between the police department and the community it seeks to serve,” Pugh said in a statement. “Any interruption in moving forward may have the effect or eroding the trust that we are working hard to establish.”

The government’s request for a 90-day continuance came three days before a scheduled hearing before a federal judge, and just hours after Sessions announced he had ordered a sweeping review of the Justice Department’s interactions with local law enforcement, including existing or proposed consent decrees.

It provided an early glimpse of the attorney general’s stance on police department oversight and his ambivalence about mandating widespread change of local law enforcement agencies.

Sessions, an Alabama Republican who cultivated a tough-on-crime reputation during 20 years in the Senate, has repeatedly expressed concern that lengthy investigations of a police department can malign an entire agency. That view reflects a dramatic break from President Barack Obama’s administration, which saw such probes as essential in holding local law enforcement accountable for unconstitutional practices.

Vanita Gupta, head of the Civil Rights Division under Obama, said the request “is alarming and signals a retreat from the Justice Department’s commitment to civil rights and public safety in Baltimore,” especially because the agreement sought the input of community members, police union officials and department heads to “address serious constitutional violations that had undermined trust and public safety in the city.”

The federal government cited several reasons for the requested delay, including new Justice Department policies.

If granted, the request would effectively stall a process that could lead to a sweeping overhaul in the policies and practices of the Baltimore police force. The two sides reached agreement on a consent decree earlier this year before Attorney General Loretta Lynch’s exit.

The department said it was aware of the need for police reform in Baltimore but added that the city “has made progress toward reform on its own and, as a consequence, it may be possible to take these changes into account where appropriate to ensure future compliance while protecting public safety.”