He risks the aggravating circumstance of premeditation Zakaria Atqaoui, the 23-year-old confessed murderer of his ex-girlfriend Sofia Castelli , 20, stabbed to death at dawn yesterday in Cologno Monzese (Milan) , in her home.

A murder, committed while the girl's family was in Sardinia, to celebrate her grandparents' wedding anniversary (she already had a ticket to join them), on which investigations are continuing.

No signs of forced entry were revealed by investigators on Sofia's doorstep, meaning the 23-year-old managed to enter another way, after waiting for the girl to return.

The investigations coordinated by the Monza prosecutor's office in the past few hours have reconstructed what happened between 5.58 in the morning, the time when Sofia returned home with a friend from the disco, and 9.30, the time when Atquaoui presented himself to the local police to turn yourself in.

The investigators, after listening to Sofia's friend who, still in shock, explained that she hadn't noticed anything, are now ascertaining the existence of a duplicate of Giulia's house keys , with which the 23-year-old could have entered in her apartment and assault her in her sleep.

"A very tried young boy." This is how Atqaoui is described by his trusted lawyer, Marie Louise Mozzarini. The lawyer specified that the boy "answered the magistrate's questions and was very cooperative". The validation of the detention is expected for tomorrow. (Unioneonline/lf)

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