Bombs exploded at two embassies in Rome Thursday, police said.

The first explosion, a package bomb at the Swiss Embassy, seriously wounded the person who opened it, police said.

A second bomb exploded at the Chilean Embassy shortly afterwards, wounding one person, who has been taken to the hospital, police said.

And a “suspicious package” was found at the Ukrainian Embassy in the Italian capital, police said, adding that security forces were on the way to investigate.

Bomb threats were phoned to City Hall and to another government office in Rome, the mayor’s office said. No bombs have been found in either location.

The bombings come a day after police blanketed Rome in heavy security due to student demonstrations.

In Thursday’s attacks, a 53-year-old mail room worker in the Swiss Embassy was badly injured in both hands, and may lose one, police said.

There was no warning of the attack, the Swiss Foreign Ministry in Bern said.

There has been no claim of responsibility for the Swiss attack, which took place about noon.

The explosion happened in the mail room at the Swiss Embassy, which also houses the ambassador’s residence.

(Source: CNN)