Rome: Italian police arrested a US citizen on Friday in connection with the death of a woman and her baby daughter who were found dead in a park in central Rome, a judicial source said, confirming reports in Italian media.
The man, who was not named, was arrested on the Greek island of Skiathos.
The case has grabbed headlines in Italy since the mother and her child, who was a few months old, were found dead on Saturday in Villa Pamphili, Rome's largest central city park.
Italian newspapers have reported that both the mother and child were also US citizens, and that investigators believe the child was murdered and are still trying to establish the cause of death of the mother.
Neither the mother nor the girl has been named.
Prosecutors in the case were due to hold a press conference later on Friday at 16:30 (1430 GMT).