Baton Rouge, Louisiana CNN  — 

Two Baton Rouge police officers involved in the 2016 shooting death of Alton Sterling are expected to learn soon whether they’ll face discipline by their department as police prepare to release four more videos recorded the night of the shooting.

Baton Rouge police Chief Murphy Paul is expected to hold a news conference and announce the decision at 4 p.m. CT Friday (5 p.m. ET), according to a law enforcement source with direct knowledge of the investigation.

City police leaders will determine in disciplinary hearings whether officers Blane Salamoni and Howie Lake II violated any policies or procedures, Paul has said.

State authorities announced this week that Salamoni was justified in shooting Sterling outside the Baton Rouge convenience store, and that no charges would be brought against him or Lake.

The fatal encounter between the two white police officers and Sterling, a black man, helped spur renewed Black Lives Matter protests across the nation.

The fatal encounter between the two white police officers and Sterling, a black man, helped spur renewed Black Lives Matter protests across the nation.

Police shootings: Trials, convictions are rare for officers

Previously released cell phone video showed Sterling, 37, pinned to the ground by the officers before he was shot.

Police said they believed Sterling was reaching for a gun. The Justice Department said in May that evidence couldn’t prove or disprove that Sterling was reaching for a weapon, and that Sterling had a loaded gun in his pocket.

As the officers await word on their future, Salamoni’s attorney said he thought department leaders decided to fire his client months ago.

“No matter what evidence we give them (at the hearing), they’re not going to listen. It doesn’t matter what we present to them – they’re going to fire him,” attorney John McLindon said.

That comment comes against a backdrop in which Paul’s boss – Mayor Sharon Weston Broome – is on record as saying she believes Salamoni’s firing is warranted. She told reporters Tuesday she hasn’t wavered “on what I have said in the past.”

“I will stand by what I have said,” she said.

The hearings

Paul said Tuesday he and three deputy chiefs will preside over the hearings for Salamoni and Lake.

The panel will decide whether “their behavior was consistent with the policy and procedures of the police department,” the chief said.

State Attorney General Jeff Landry released a report Tuesday concluding the shooting was justified, 10 months after federal prosecutors determined they wouldn’t file civil rights charges against the officers.

But the disciplinary hearings could focus on factors besides justification, such as authorities’ determination that Salamoni pointed a gun at Sterling’s head early in the encounter, and while swearing, threatened to shoot him in the head if he moved.

That, for example, is a police policy issue, rather than a question of constitutional violations, the state report cites a use-of-force expert as saying.

If the officers disagree with whatever decisions the panel makes, they can file an appeal with a municipal fire and civil service board.

Bystanders’ videos grabbed attention

The killing gripped the nation in part because two videos taken by bystanders, each less than a minute long, were released publicly shortly after the shooting and captured the final part of Sterling’s struggle with the two white officers.

alton sterling new angle
Video of Alton Sterling's shooting
01:03 - Source: CNN

Authorities have said Salamoni and Lake went there after police received a 911 call from a man who said someone had pulled a gun on him.

The woman who raised Sterling, Sandra Sterling, told reporters she’s seen the unreleased videos – and that they will spark more public outrage.

“When you see those other … videos of Blane Salamoni killing Alton Sterling, you’