Fifteen members of the bloody Trinitarios street gang were charged Thursday with attempted murder, conspiracy and gang assault for a trio of violent Manhattan attacks.

An indictment unsealed in Manhattan Supreme Court implicates the gang — which is responsible for the 2018 slashing death of Lesandro “Junior” Guzman-Feliz — in the June 2018 assault on a 14-year-old boy who was stabbed multiple times after being chased onto the Bronx River Parkway.

All of the men are accused members of the Bronx-based Los Sures subset of the gang — including reputed leader Richard Ramirez.

Gang members were also charged in a Nov. 6, 2017, attack on a man at a Manhattan Kentucky Fried Chicken, and an Oct. 19, 2017, gang attack at a Washington Heights bodega, prosecutors said.

“These Trinitario members used encrypted messages to strategize, Fort Tryon Park as their meeting place, and Upper Manhattan as their hunting ground,” Manhattan DA Cyrus Vance said in a statement.

Prosecutors said the attacks were part of a turf war between the Bronx-based Los Sures and Manhattan-based F.E.B. subsets of the Trinitarios.

The gangsters used the WhatsApp messaging app and emails to communicate, with leaders organizing and deploying gang members to carry out the attacks, prosecutors said.

In one cryptic message on a WhatsApp group chat, reputed acting gang leader Richard Ramirez Perez told his crew after one attack to “get lost.”

“Everybody who has blood on them bro, change, change,” according to the indictment. “Head home and clean everything, your hands, everything.”

“Put away the machetes, bury them, I don’t know what y’all do bro, but put everything away. Everybody wipe the blood off of yourselves bro because now they are going to put in work to find, to find us now.”

Ramon “Yupi” Paulino is accused of overseeing the Washington Heights attack “and kept in contact with participants of the crime by cellphone,” Assistant District Attorney Maria Strohbehn said in court.

Paulino was also caught on surveillance video at the KFC incident “throwing an object at the victim who was hiding behind the Plexiglas window.”

Police rounded up the 10 gangbangers during early morning raids Wednesday, among them Richard Ramirez, another reputed leader of the Los Sures set.

Three others were hauled into court Thursday, with two more charged but not arrested.

The gang is most notorious for the bloody June 20, 2018, slaying of Guzman-Feliz at at Bronx bodega — where they mistook the 15-year-old for a rival gang member, dragged him out into the street and slashed him to death with machetes and knives.

Several gang members have been convicted of murder in the teen’s death, and others have charges pending in the case.

Two of them — Sules reputed leader Diego Suero Lorenzo and alleged member Elvin Garcia — were named in the new indictment and were charged while in jail, authorities said Thursday.

Garcia was expected to be sentenced in the Guzman-Feliz case Thursday.

The Trinitarios are a Dominican gang that began at Riker’s Island in the early 1990s and has since spread throughout the Bronx and Upper Manhattan — with machetes and knives as their preferred weapons.