JACKSON, Miss. (AP) - Officials haven't yet said who's responsible for the shot that killed a 3-month-old baby when his father died in a shootout with police on a highway last week in Mississippi.

Activists with Black Lives Matter Mississippi are calling for the release of police body camera footage of what happened May 3 near Biloxi. Investigators won’t say whether any officers were wearing their body cameras at the time.

A group gathered Sunday by I-10, near the site of the shooting, to pay tribute to the life of infant La’Mello Parker and two people killed earlier May 3.

Authorities said Christin Parker, 32, and her nephew Brandon Parker, 26, were killed by La’Mello’s father, Eric Derrell Smith, in a domestic dispute, leading to the police chase and standoff in which Smith and the baby were killed.

A video taken by a bystander shows the final barrage of gunfire after more than a dozen law enforcement vehicles, blue lights flashing, pursued Smith’s car.

An autopsy determined that La’Mello Parker died of a single gunshot wound. The coroner of Harrison County, Mississippi told The Associated Press last week Biloxi police investigators would compare the bullet to the weapons fired at the scene to try to determine the source of the fatal shot.

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READ ON: See the States Where People Live the Longest

Stacker used data from the 2020 County Health Rankings to rank every state's average life expectancy from lowest to highest. The 2020 County Health Rankings values were calculated using mortality counts from the 2016-2018 National Center for Health Statistics. The U.S. Census 2019 American Community Survey and America's Health Rankings Senior Report 2019 data were also used to provide demographics on the senior population of each state and the state's rank on senior health care, respectively.

Read on to learn the average life expectancy in each state.