Two adults were charged with murder Tuesday over the terrifying shooting at the Kansas City Chiefs Super Bowl parade that left one dead and 22 others hospitalized, prosecutors said.

Dominic Miller, 18, and Lyndell Mays, 23, both face charges of second-degree murder and two counts of armed criminal action and unlawful use of a weapon.

They are being held on $1 million bond.

The defendants attended a Super Bowl parade and rally on Feb. 14, 2024, and were armed with firearms,” the Jackson County Prosecutor’s Office said.

“A verbal altercation occurred and gunfire broke out with no regard for thousands of other individuals in the area.”

Miller and Mays had “no prior connection” before they encountered one another at the parade on Valentine’s Day, prosecutors confirmed at a press conference, but when a heated argument broke out between the strangers, it quickly escalated.

Mays allegedly drew his weapon first, and “almost immediately” several others, including Miller, brandished their own.

It was Miller’s weapon that fired the bullet that killed 43-year-old Lisa Lopez Gavlan, a mother of two, prosecutors said.

The charges come just days after two teens were slapped with gun and resisting arrest charges.

Those teens were charged as minors, but officials have said they could be upgraded to adults in the coming weeks.

A total of four people have been charged in the deadly mass shooting.

Authorities declined to comment on how many shooters they suspected were involved.

The shooting broke out Wednesday as thousands of fans lined the streets of Kansas City to watch the NFL team’s victory parade.