Three men were arrested in the Buenos Aires municipality of Villa Elisa on Thursday for allegedly gang raping a 15-year-old girl.
The attack comes just days after a separate incident in the coastal city of Miramar, where five men aged 21 to 23 were arrested and charged over the alleged rape of a 16-year-old girl.
Police in Villa Elisa are still looking for four other suspects, sources told the Noticias Argentines news agency. All suspects are above the age of 18.
The incident took place in Villa Elisa — a small city in Buenos Aires province, near the provincial capital La Plata — at around three o'clock in the morning. According to the police report, the men wore face masks to attack the teenage victim as she was leaving a friend's house. As one of them raped her, the others groped her.
A subsequent medical examination confirmed signs of assault, including injuries to her neck.
Police are not ruling out the prospect that the attack was premeditated.
The case is now in the hands of prosecutor Juan Ignacio Menucci, who has offered the victim the chance to recognise the perpetrators in a police lineup.
The teenager lives in Villa Elisa with her grandparents and siblings. Her grandfather told local media she was "doing well" and would soon begin counselling.