Police in Peru have arrested a man suspected of having ordered the killing of two 20-year-old women and a 15-year-old girl in Argentina.
The three were lured to a house near the Argentine capital on 19 September.
Their mutilated bodies were found several days later and police revealed that their killers had livestreamed their torture and killing on Instagram.
The brutality of the crime has sent shockwaves through the region, with thousands taking part in anti-femicide protests in Buenos Aires on Sunday.
The security minister of Buenos Aires province, Javier Alonso, stated that cousins Morena Verdi and Brenda del Castillo, both 20, and 15-year-old Lara Morena Gutiérrez had been lured by an international drugs gang under the pretense of attending a party.
CCTV footage of them getting into a van with fake number plates enabled police to track them to the house where they were murdered.
Their bodies were discovered buried in the garden.
The security minister indicated that the murder was broadcast to a closed group of 45 individuals, with a voice heard during the stream saying, this is what happens to those who steal drugs from me.
In the days following the crime, Argentine police arrested seven suspects, including the individual responsible for digging the hole where the victims were buried and a man with his niece who drove the victims to the location.
The primary suspect, Tony Janzen Valverde Victoriano, also known as Little J, managed to evade capture until his recent detention on a motorway 70km south of Lima, Peru, while hidden in a van transporting fish.
Additionally, Peruvian police apprehended 28-year-old Matías Ozorio, Valverde's right-hand man, who is set to be extradited to Argentine authorities.
Police intercepted communications between Valverde and Ozorio, allowing them to locate their whereabouts. Ozorio claimed he was tricked into entering Peru by a drug gang to whom he owed money.
Argentina's security minister has commended Peruvian police for their efforts in apprehending both suspects.
