According to MANA, Coastguard Admiral Vincenzo Melone sent a letter ordering passenger and cruise-ship ports to raise their alert level to 2 from 1, the spokesman said. The coastguard gave no reason for the move.
Italy’s national security alert level was already at 2, the highest possible level in absence of a direct attack, following Islamist attacks in France and Belgium last year.
After the Nice attack last month in which more than 80 people were run down by a delivery truck, Italy increased border controls, and Rome last week boosted security at the Colosseum and Vatican after a French priest was murdered in his church.