THREE women were brutally tortured, raped and executed on a horror Instagram livestream after being kidnapped by narco thugs.

Cops said the sadistic torture was watched by dozens after a local gang in Argentina reportedly tricked the trio and snatched them away.

The youngest victim has been identified as Lara Gutierrez, who was just 15.

The others have been named as Brenda del Castillo, 20, and Morena Verdi, 21.

Local media claimed two of them had been accused of stealing four kilos of cocaine from the gang.

The regional government minister said the murderers were an “act of narco revenge".

Chilling details emerged from the sadistic murders after cops found the bodies of the three women.

Gutierrez is said to have had all five fingers on her left hand amputated before being killed.

Del Castillo had a skull fracture, and her stomach had been cut open.

Verdi was reportedly asphyxiated with a plastic bag, which was found pulled over her head.

Buenos Aires’ security minister Javier Alonso said the bodies of the three young women were found five days after they went missing last Friday.

He said: “They were last seen getting into a vehicle voluntarily because they had been invited to an event, not knowing they were falling into a trap set for them by an international drugs trafficking gang which had hatched a plan to kill them.

“The families of the victims have been informed.

“The entire murder and torture session was broadcast live on social media and was apparently viewed by 45 people who follow that Instagram account.”

"The bodies were found buried in a garden. The drug trafficking organisation has its operational command in Buenos Aires, and they had chosen this house to carry out the murders."

The gang leader who allegedly ordered the "revenge killings" has been identified as a Peruvian national believed to have fled the country, authorities said.

Alonso said that four people have so far been arrested