Causo’s body was found inside a garbage bag in a shopping trolley next to a trash container in the Rome’s Primavalle neighbourhood.
The brutality of the attack, the way the body was treated and the age of the victim and the alleged killer, also 17, have caused widespread shock and dismay in Italy.
During four hours of questioning before a preliminary investigations judge (GIP) on Saturday, the suspect said the lethal attack took place after a row over €20 he owed Causo for hashish, sources said.
“This story about the debt is nonsense,” Causo’s mother Daniela Bertoneri, said, adding that she thinks the homicide was premeditated.
The girl’s father told Corriere della Sera that he thinks his daughter was attacked after she repelled a sexual advance from her killer.
A Rome preliminary investigations judge (GIP) on Saturday ruled that a 17-year-old boy accused of murdering a girl of his same age in the north of the Italian capital this week should remain under arrest.
The boy was taken to a juvenile prison after being questioned for four hours before the GIP.
He is alleged to have killed Causo in the apartment where he lived in Rome’s Primavalle neighbourhood, before leaving her body inside a garbage bag in a shopping trolley next to a trash container.
He was arrested on Thursday morning.
Causo presented at least six wounds inflicted by a kitchen knife to the neck, chest and back, according to preliminary autopsy findings released on Friday.
She was not sexually assaulted, according to the preliminary findings.
Her father demanded justice on Saturday.
“The State must deliver justice, otherwise you have the justice of the street,” the man said.
“There is no forgiveness for something like this.
“Some things never pass. I have stopped living,” he said.
ANSA