Updated

The office of Italian Premier Mario Monti says he will attend the funeral of a 16-year-old girl killed in a bombing outside a school in southern Italy that also injured four other young women.

It says Monti left the NATO summit early to reach Italy in time for the funeral of Melissa Bassi on Monday afternoon.

Investigators have no confirmation of the motive for the bombing Saturday in the Adriatic port city of Brindisi, but showed film from a closed circuit security camera of a man apparently detonating a bomb in a trash can outside a vocational school.

It is not known whether he acted alone or with others.

The bombing followed a spate of recent attacks against Italian officials and government or public buildings by a group of anarchists.