Two parcel bomb explosions rocked Italy’s capital Thursday—one at the Chilean embassy and another at the Swiss embassy. One person was injured in each embassy attack. No one has claimed responsibility; Rome’s mayor believes the culprit is international, not domestic. European security officials have been worried about a holiday attack similar to the Mumbai terrorist attack in 2008. There have been violent anti-government protests in Rome over the past week, but officials said there was no indication the attacks were linked to those demonstrations. On Tuesday, there was a bomb scare on Rome’s subway after authorities discovered a rudimentary device, but police later said it contained no explosives.