Two adults have been charged with second-degree murder following the shooting at the Kansas City Chiefs Super Bowl parade last week.

Lyndell Mays, aged 23, and Dominic Miller, aged 18, are facing charges including murder in the second degree, armed criminal action and unlawful use of a weapon.

These two individuals are not the two juveniles that had been charged with gun-related offenses and resisting arrest last week.

Prosecutors allege that Mays pulled his gun first during an argument which resulted in others pulling firearms including Miller.

At a press conference on Tuesday, prosecutor Jean Peters Baker said Miller is believed to have fired the shot that killed local DJ Lisa Lopez-Galvan.

Baker also said at the press conference that the Jackson County Prosecutors Office was ‘not done yet’ and that a number of other suspects who were involved in the shooting are being sought.

The two men have been hospitalized with injuries following the shooting and remain in hospital as of Tuesday, Peters Baker said.

If found guilty, the two could face life behind bars and are being held on a $1,000,000 bond.

The 22 people injured range in age from eight to 47, according to police Chief Stacey Graves. With half of them under the age of 16.

Police initially detained three juveniles but released one who they determined wasn’t involved in the shooting.

Images circulating on social media show at least five people being taken into custody following the shooting.

As investigators continue to work the case, bullets and shell casings left behind at the scene have become key pieces of evidence.

Specialists from the ATF are working to connect firearms owned by suspects to debris left at the scene, a law enforcement source told CNN.

Amid claims that one of the gunmen span in a circle to pepper as many people with bullets as possible, bullets lodged in the surrounding area have also been taken for analysis.

Those bullets left in the over two dozen victims would ideally be matched to specific firearms taken from suspects to determine which gun was responsible for each victim.

Because shell casings are left with a unique mark by firearms, similarly to fingerprints, the analysis may also determine if the guns were used in other crimes in the Kansas City area.

It comes after several witnesses have given harrowing accounts of the moment the family event descended into mayhem.

Witnesses described a chilling scene of victims being shot and people getting trampled in the mayhem.

Upwards of a million people were expected to have gathered in Kansas City for the celebration, exacerbating the frantic scenes as the huge crowds formed a stampede to run for safety.

Rick Reichmeier told KCTV he was separated from his family when the shooting began, before witnessing the grisly moment after a woman was shot.

‘When I got up there was a lady probably about 25 feet away from me and she had blood coming out of her mouth as they were pumping her chest,’ he said.

‘I was walking away and I heard some shots, some pops pop pop pop, people started running and I ran. Then all of a sudden people start hitting the ground, I hit the ground, people are falling on top of me.’

Another witness who sustained a gunshot wound to his ankle, Jacob Gooch Jr, claimed a woman pleaded with a gunman ‘don’t do it’ seconds before he spun in circles to pepper as many people with bullets as possible.

Gooch Jr, who was shot in the chaos alongside his wife and son, told CBS Mornings that he heard a young woman tell the shooter, ‘not here, this is stupid.’

‘My wife and daughter saw the gun come out and start shooting,’ he said. ‘My daughter said some lady was holding him back… then he pulled (the gun) out and started shooting and spinning in a circle.’

Gooch said he didn’t personally see the gunman, but was a short distance away as he recalled initially thinking the gunshots were fireworks.

He said he was shot in the ankle, his wife was shot through the calf muscle, and his son sustained a bullet wound to his foot, but his family were thankfully okay besides the wounds and had returned home from the hospital.

Tributes have poured in for the mother of two, who passed away during emergency surgery in hospital after sustaining a gunshot wound to the abdomen.

Her devastated family said on Friday: ‘We are heartbroken with the loss of our loved one… We ask to please keep our family in your prayers as we grieve the loss of Lisa’s death while also supporting our other loved ones who were impacted in this senseless act.’

Local Democrat Manny Abarca who was a friend of Lopez-Galvan’s spoke about her impact in an interview with TalkTV’s Jeremy Kyle and Rosie Wright on Talk Today.

‘It’s a tragic situation. I was there with my six year old daughter, Camilla and we went from catching confetti to hiding in a bathroom, not knowing what our fate may be. Unfortunately, this is the state of large events like this in America.

‘We have to look out for those with weapons that are readily accessible, and accessible particularly in states like Missouri.’