“This is the kid who shot your nephew,” a man unknown to the family told the aunt of Rayquon Story, 19, who was killed early Sunday on a parked No. 5 train in Eastchester, the Bronx, police sources said.

After handing her the photo, the tipster went on to tell the aunt that the suspect, identified by police as Robert Denis, lives in Co-op City.

She turned the photo over to detectives, who then spoke to Co-op City security. They recognized the teenager and he was taken into custody.

Denis is accused of squeezing off five rounds during a 2:30 a.m. confrontation at the Dyre Ave. and E. 233rd St. subway station, striking four people, including Story, cops said.

Officers from the 70th Precinct said that NYPD Skywatch camera system was placed at the corner of Dorchester Road and East 21st Street, right at the spot where three people were shot, one fatally, on July 30.

Police said that the state-of-the-art camera surveillance system, which is usually used in high-crime neighborhoods, can reportedly view incidents several blocks away from where they’re posted.

“The booth in the center platform of the camera system is manned constantly,” an NYPD spokesman explained. “So when know what’s going on when it happens. We usually use it in areas where there’s a spike of crime or a surge in shootings.”

That’s just what the cops from the 70th Precinct are trying to avoid.

Police said that they are still looking for the gunman responsible for opening fire at the corner of Dorchester Road and East 21st Street, which is close to the heart of the NYPD’s Impact Zone, a designated high crime area where additional officers are placed to deter illegal activity.

. . .

Inspector Thomas Harris, the commanding officer of the 70th Precinct said that felony crime in the Impact Zone is down 26 percent as of July 9.

With the Skywatch cameras in place, it’s Harris’ hope that even fewer crimes will take place in the area.

“I think [the cameras] are great,” he said. “It gives cops a bird’s eye view of what is going on in the community and deter crime in the area.”

Harris said that the camera platform is being well received on Dorchester Road.

If they didn’t do as he said, their jewelry stores would be damaged and their families would face the consequences, he wrote.

He signed the letters, “Cosa Nostra.”

The extortionist, police say, was not some mobster or wannabe tough guy.

Instead, they say he was a teen-ager from Sunnyside. The 15-year-old Sunnyside boy allegedly wrote extortion letters to nine jewelry stores, demanding the stores’ owners leave $10,000 in a brown paper bag in Clove Lakes Park or face the consequences, according to authorities. His name is being withheld because of his age.

One letter, sent to Buono Jewelers on Hylan Boulevard in Grasmere last Friday, instructed the owner to drop the cash behind “a rowboat half buried verticaly (sic) opposite the entrance to the lake club” at 9:30 a.m. Sunday.

“If Law Enforcement is notified or intervines (sic) with the exchange you can be sure that not just your store will be harmed but also your family,” the teen allegedly wrote. “If you wish that no damage or harm come to your store or family you will pay.”

But when he showed up at the park, the teen found a paper bag filled with nothing but paper — and the police, waiting for him, according to law enforcement sources.

“I thought it was a joke, and I just handed it to the Police Department,” said the owner of Buono, who spoke on condition of anonymity, saying that he has been robbed in the past and doesn’t want to speak publicly.

Police chasing after a man who launched fireworks off Woods of Arden Road late Saturday night say they ended up finding a pyrotechnics treasure trove inside the Lenzie Street garage of a reputed mobster.

The stash, which cops estimate at $8,000, looks like it could have come from the shelves of a toy store — dozens of brightly-colored boxes with names like “The Beast Unleashed,” “Fire King Returns,” “New Yorker,” “Midnight Monsoon,” “Screamin’ Meemie” and “Pyrotechnic Motherlode,” decorated with demented clowns, blue monsters and a robed wizard.

. . .

According to police, Frank Russo, 26, of the 100-block of Benton Avenue, was lighting “birthday cake” style fireworks at the corner of Woods of Arden Road and Lenzie Street at about 11 p.m. Saturday.

Three officers and a sergeant from the precinct’s Anti-Crime Squad — Officers Shaun Mortman, William Palmer Brian Laffey and Sgt. Andre Teterycz — saw one of the fireworks go off, and gave chase.

Russo ran down Lenzie Street, to the home of a cousin, 37-year-old Frank (Frankie Steel) Pontillo and led the cops right to the stash, according to police.

Russo and Pontillo ran into the house, through an open garage door, and when police showed up, they saw the fireworks boxes inside the garage.

Pontillo, a reputed associate of the Colombo crime family, is still on supervised release after a 1993 murder conspiracy and racketeering conviction, court records show.

“All I was trying to do was a provide a great space with free alcohol and a lot to look at,” said artist Frank Shepard Fairey, whose opening show with about 1,000 guests was forced to close Thursday night. “It’s offensive to me that anyone would come sabotage my art show.”

It was the second stink-bomb attack at an art gallery in as many weeks.

The local art community was immediately abuzz with speculation that Cooper was the infamous Splasher — who has defaced dozens of street-art creations throughout the city with splotches of house paint.

. . .

Witnesses say that at about 8:30 p.m. Thursday, Cooper and an unidentified man attempted to ignite an incendiary device in a coffee can during the crowded open-bar reception. A partygoer noticed the smoke and alerted security.

Cooper was quickly caught, but his accomplice got away.

Fairey, who gained notice in the early 1990s by putting up stencils of wrestler Andre the Giant and “Obey Giant” stickers around cities throughout the East Coast, said Cooper shouldn’t get off easy.

“This is serious. I’ve been arrested for doing street art. I knew I would be held accountable for my actions, and he should have considered that jail may be a possibility,” said Fairey, who confronted Cooper after security nabbed him.

“He tried to turn it around and say that he is the victim and that I should feel bad for him.”

. . .

The Splasher has struck 20 out of the 22 murals Fairey created in New York City.

Fairey has his own theory on why his work is targeted.