Two young men were shot Sunday evening just as a Brooklyn Puerto Rican Day Parade came to a close, cops said. 

A 19-year-old man was shot in the left arm and a 20-year-old man took a bullet to the back during a clash on 45th Street near 5th Avenue in Sunset Park just after 7 p.m., police said. 

Footage obtained by News 12 showed a shooter dressed in all black opening fire while chasing a man wearing red pants down 45th Street, with the latter then falling behind a parked car.

Police haven’t confirmed a link between the shooting and the Sunset Park Puerto Rican Day Parade & Festival, which kicked off at 5 p.m. at 59th Street and 5th Avenue and ended near 43rd Street. Video taken by a bystander showed medics and police responding to the scene, with the roped-off area just steps from dozens of lingering parade-goers. 

Both victims were taken to NYU Langone Brooklyn Medical Center, where they were listed in stable condition. It was not immediately clear what sparked the fight. 

Earlier Sunday, further north in the borough, Brooklyn-born Knicks point guard Jose Alvarado started his NBA Finals victory tour at the separate Knickerbocker Avenue Puerto Rican Day Parade in Bushwick with Mayor Zohran Mamdani.

“Thank you guys so much, it means the world to me. Really,” Alvarado said as he stood on a float during the neighborhood’s eighth annual parade. “I’m a kid from Brooklyn. And the Knicks party f–kin’ did it.” 

The triumphant moment came just hours after the Knicks clinched their first NBA title in 53 years during Game 5 on the San Antonio Spurs’ Texas home turf.

A total of 63 people were taken into custody Saturday night and Sunday morning as some rowdy mobs among the thousands of jubilant fans in the Big Apple took their post-win celebrations way too far. 

The chaos included a 17-year-old boy shot in the left foot around 2 a.m. Sunday in the heart of Times Square at 42nd Street and Broadway — roughly around the time hooligans began tearing apart and setting fire to school buses in the tourist hub, cops said. 

Two teens have so far been arrested in connection to that burst of gunfire, but neither was the shooter, police said.

Carmelo Rodriguez, 18, was charged with criminal possession of a weapon and possession of a large capacity ammunition feeding device; and a 17-year-old boy was charged with criminal possession of a firearm and criminal possession of a weapon in a restricted location, authorities said.