A Denver police officer suffered a leg fracture during Monday’s shooting, but exactly how the injury happened remains in question, Chief Robert White said.

“Whether it occured as a result of his attempt to get out of the way of the moving vehicle or being struck by the moving vehicle, that’s part of the investigation,” White said.

White held a press conference Thursday to talk about his plans for reviewing the department’s policy, training and procedures for shooting at moving vehicles.

While White was pressed to release more details about the shooting, he declined to break new information and was measured in how he spoke about the preliminary report.

Meanwhile, the ACLU of Colorado joined the chorus of people questioning the department’s procedures for shooting at moving vehicles.

“We’ve all seen the current policy and you all understand there are very serious questions about whether this shooting was a direct violation of the police department’s policy,” said Mark Silverstein, the civil rights organization’s legal director.

WATCH: Colorado ACLU weighs in on Jessie Hernandez shooting

On Monday, officers Daniel Greene and Gabriel Jordan shot and killed 17-year-old Jessica Hernandez after they said she started driving a stolen car toward them after they had tried to order her and four other teens out of the car.

Funeral arrangements for Jessica have not been finalized, said Alberto Hernandez, one of her uncles.

Hernandez, who lived in Thornton with her parents and five younger siblings, had prior contact with law enforcement in Denver, said Lynn Kimbrough, a spokeswoman for the district attorney’s office. However, the DA’s office will not release any records until its routine criminal investigation into the officers is complete.

A law enforcement contact could be anything from a speeding ticket to more serious felonies.

It was the fourth time in seven months Denver police have fired at moving vehicles. Two suspects have been killed and three have been injured. At least three police officers have been injured in the incidents.

The Denver Police Department’s use of force policy instructs officers to avoid firing at a moving car unless there is a direct threat of serious injury or death and there are no other reasonable options.

“I think you will agree our policy is very restrictive,” White said.

However, White said he was compelled to review his officers’ actions after four incidents in less than a year. Stephanie O’Malley, executive director of public safety, also was involved in the decision to review the policy, how officers are trained on it and how they carry it out.

On Tuesday, Denver’s Independent Monitor Nick Mitchell announced plans for his office to do an evaluation of Denver police shooting at moving cars. In a letter to White, Mitchell said he wanted access to the department’s training staff, tactics experts, officer-involved shooting investigators and policy documents.

Silverstein said the Denver police policy on shooting at moving cars was changed in 2008 after it was recommended by an outside police consulting firm.

However, that leads to the question of how the police department is training its officers and whether the change has been made clear throughout the ranks, he said.

“We hope Denver does more than send an e-mail to officers that says, ‘You know that part about shooting at moving vehicles? There’s a change,’ ” Silverstein said.

As for transparency into the investigation, White said Thursday he is limited about what he can say because the district attorney is conducting a routine criminal investigation into the officers’ actions.

Once the district attorney issues a decision letter on whether or not to pursue charges, the case is returned to the police department for an internal review.

The DA’s case files are available for public review after the safety manager makes a decision on officer discipline or within 60 days of Morrissey’s decision on whether to file criminal charges, whichever comes first, Kimbrough said.

Noelle Phillips: 303-954-1661, nphillips@denverpost.com or twitter.com/Noelle_Phillips