Carabinieri police have arrested a man suspected of stabbing a female university student to death in broad daylight in a Messina street on Monday before numerous witnesses, sources said on Tuesday.

The victim was named as Sara Campanella, a 22-year-old from Palermo who was a student at the Messina university nursing sciences faculty.

The sources said the suspect was a university companion of Campanella's.

She was killed by a single stab wound to the jugular.

Witnesses said she had been arguing with a young man before she was murdered.