An explosion in a cathedral in the northern Italian city of Motta di Livenza has injured three people.
A special police force has been set up to track down the 'Unabomber'
The blast, after Sunday morning Mass, appeared to have been triggered by a device inside an electric candle.
A six-year-old girl suffered serious hand and eye injuries. The two adults were lightly injured.
Police suspect the explosion may have been caused by a mystery attacker - the Italian Unabomber - who has terrorised northern Italy for over 10 years.
In January, a bomb said to have been planted by the Italian Unabomber was planted inside a chocolate egg container in the city of Treviso.
A group of children on a school outing narrowly escaped injury when one of them kicked the container, setting off the explosive device.
The Italian interior ministry has set up a special task force to concentrate on the hunt for the bomber.
The attacker is said to model himself on the American Unabomber, Theodore Kaczynski, who is serving life in prison without parole for killing three people and injuring 23 through booby-trapped letters.