NEW ORLEANS — The mayor of New Orleans on Monday announced the city has reached settlements totaling $13.3 million in lawsuits over deadly police shootings after Hurricane Katrina and a fatal beating just before the 2005 storm, and he apologized to the victims' families on behalf of the city.

"I am hoping that in some sense the strength of these families will help the city find peace in our future," Mayor Mitch Landrieu said at an afternoon news conference attended by some relatives of the victims.

Landrieu said the settlements are with 17 plaintiffs.

Sherrel Johnson, the mother of 17-year-old James Brissette, who died in the Sept. 4, 2005, shootings on the Danziger Bridge, was among the victims' relatives on hand for Landrieu's announcement. She said she "wholeheartedly" accepts his apology.

"Since that time, it has been an awful long and rough road. But me and my family got through it," she said. Later, she added, "Now this is closure for me, and I can go forward ... because I know the old New Orleans does not exist anymore."

Jurors walk the Danziger Bridge as State police and agents with the Federal Protective Service close parts of Interstate 10 and Chef Menteur Highway in New Orleans on Tuesday, July 26, 2011 so that jurors in the Danziger Bridge case could get a firsthand look at the spot where New Orleans police shot and killed two people and wounded four others less than a week after the 2005 storm. Michael DeMocker / ASSOCIATED PRESS

A total of 20 current or former New Orleans police officers were charged in a series of Justice Department civil rights investigations following the August 2005 storm. All but one of the cases centered on alleged police misconduct during the chaos that gripped the flooded city.

Eleven officers pleaded guilty to charges related to deadly shootings on a bridge less than a week after Katrina's landfall. Officers shot and killed two unarmed people and wounded four others on the Danziger Bridge before engaging in a cover-up that included a planted gun, fabricated witnesses and falsified reports.

Brissette and 40-year-old Ronald Madison, a mentally disabled man, died in the Sept. 4, 2005, bridge shootings. Lance Madison, Ronald's brother, was on the bridge that day and was initially arrested after being falsely accused of shooting at officers.

A federal judge who presided over a trial for five of the officers charged in the bridge shooting threw out their convictions in 2013. U.S. District Judge Kurt Engelhardt said at least three government attorneys posted anonymous comments on a New Orleans newspaper's website, creating a "carnival atmosphere" that "distorted and perverted" justice in the case.

Engelhardt ordered a new trial for the five officers, who ultimately pleaded guilty in April. Lawsuits over the bridge shootings had been placed on hold while the criminal cases were pending.

Coming together for a healing moment with the families of victims from tragic Glover, Danziger Bridge & Robaire incidents in #NOLA. pic.twitter.com/k4mCTatp9j — Mitch Landrieu (@MayorLandrieu) December 19, 2016

Five other officers were tried on charges related to the death of 31-year-old Henry Glover, who was fatally shot outside a strip mall before his body was burned.

Former officer Gregory McRae, who burned Glover's body in a car, is the only officer whose conviction in the case still stands. McRae is serving a prison sentence of more than 11 years.

The officer who fatally shot Glover was convicted of manslaughter but was later acquitted by another jury after an appeals court awarded him a new trial.

Romell Madison, whose brother Ronald was killed Sept. 4, 2005 at the Danziger Bridge, speaks to the media after the sentencing of former New Orleans police officers who were convicted in the deadly shootings of unarmed civilians on the bridge and a subsequent cover-up after Hurricane Katrina in New Orleans, April 4, 2012. SEAN GARDNER / REUTERS

Two former New Orleans police officers were convicted of charges stemming from the fatal beating of Raymond Robair, a 48-year-old handyman who died less than a month before Katrina struck.

Former officer Melvin Williams was sentenced to more than 21 years in prison for kicking Robair and beating him with a baton. Another former officer, Matthew Dean Moore, was sentenced to more than five years in prison for submitting a false report and lying to the FBI about the encounter.

Robair's relatives sued the city and former police superintendent Eddie Compass.

LaShonda Enclade, Robair's daughter, attended the news conference. She said she forgives the city, but forgiving the officers involved is more difficult.

"The word forgive is a very, very, hard word. ... I'm not going to say I can ever forgive them. It's something to be worked on," she said.