Rome: A package exploded at the Swiss embassy in Rome on Thursday, Italy's foreign ministry said on Thursday and Ansa news agency reported that one person was seriously injured.
The ministry had no further details on the incident. The embassy did not answer the telephone and no comment was immediately available from Italian police.
The explosion follows the discovery of a suspected bomb on an empty underground train in Rome on Tuesday. However, police said that device lacked a detonator and tests showed it contained no explosive.
Italy has witnessed anti-government protests across the country in the past week, with Rome the scene of some of the most violent clashes.