Two federal officers involved in Saturday's shooting of Alex Pretti have been placed on paid administrative leave, according to multiple sources familiar with the situation.

The sources told ABC News this is standard operating procedure when there is an officer-involved shooting.

One federal officer involved is a Border Patrol agent and the other is a Customs and Border Protection officer, according to a Department of Homeland Security notification to Congress, obtained by ABC News on Tuesday. Both discharged their weapons, according to the notification.

A Customs and Border Protection spokesperson said the two officers involved have been on administrative leave since Saturday, calling it "standard protocol."

At a news conference on Sunday, Customs and Border Protection commander-at-large Greg Bovino said the officers involved in the shooting were still working.

"All agents that were involved in that scene are working, not in Minneapolis, but in other locations," he said.

-ABC News’ Luke Barr

Minnesota Gov. Tim Walz visited the memorial for Alex Pretti Wednesday morning, telling ABC News correspondent Matt Rivers, "We’re just personally paying our respects, my wife and I."

Asked if he thinks there will be a shift in tone from the administration after his conversation with President Donald Trump, the governor replied, "I’m not so interested in shift in tone. We just need them out of here, and we need accountability for what’s happened."

President Donald Trump said in a social media post that Minneapolis Mayor Jacob Frey is "playing with fire" after Frey said the city will not enforce federal immigration laws.

"Surprisingly, Mayor Jacob Frey just stated that, 'Minneapolis does not, and will not, enforce Federal Immigration Laws.' This is after having had a very good conversation with him," Trump wrote on social media. "Could somebody in his inner sanctum please explain that this statement is a very serious violation of the Law, and that he is PLAYING WITH FIRE!"

Frey said on social media on Monday that in his meeting with border czar Tom Homan, he "reiterated that my main ask is for Operation Metro Surge to end as quickly as possible."

"I shared with Mr. Homan the serious negative impacts this operation has had on Minneapolis and surrounding communities, as well as the strain it has placed on our local police officers," Frey said. "I also made it clear that Minneapolis does not and will not enforce federal immigration laws, and that we will remain focused on keeping our neighbors and streets safe. City leaders will continue to stay in conversation with Mr. Homan and his team."

-ABC News’ Hannah Demissie

Top White House adviser Stephen Miller said in a statement to ABC News that Trump administration officials are "evaluating" why Customs and Border Protection agents in Minneapolis “may not have been following” protocol leading up to the fatal shooting of Alex Pretti over the weekend.

Miller's statement comes as the administration is grappling with the fallout from the Minneapolis shooting -- and amid finger-pointing playing out from various officials behind the scenes.

In the immediate aftermath of the shooting, Miller described Pretti as a "domestic terrorist" in a post on X, language which was echoed by DHS Secretary Kristi Noem.

But Tuesday night, Miller provided this statement to ABC News, appearing to question the actions of Customs and Border Patrol and suggesting that agency was to blame for those initial assessments.

"The initial statement from DHS was based on reports from CBP on the ground. Additionally, the White House provided clear guidance to DHS that the extra personnel that had been sent to Minnesota for force protection should be used for conducting fugitive operations to create a physical barrier between the arrest teams and the disruptors. We are evaluating why the CBP team may not have been following that protocol."

-ABC News' Rachel Scott