MILAN, Italy, May 20 (UPI) -- Italian police on Wednesday arrested a man suspected of participating in the Bardo museum attack in Tunisia, where 22 people, mostly tourists, were killed by gunmen.
A 22-year-old Moroccan man was arrested in Gaggiano, about 10 miles from Milan. It is not clear what his alleged involvement was in the attack on the Bardo National Museum in Tunis on March 18.
A Tunisian security guard and 21 tourists from Japan, France, Poland, Spain, Colombia and Britain were killed in the attack. The Islamic State has previously taken credit.
Two gunmen, identified as Yassine Laabidi and Hatem Khachnaoui, were killed by security forces during the attack.
Tens of thousands of Tunisians took to the streets to protest Islamist extremism days after the attack. Under the slogan "Le Monde est Bardo [The World is Bardo]," the demonstrators marched to the museum, chanting "Tunisia is free! Terrorism out!"
French President Francois Hollande and Italian Prime Minister Matteo Renzi were among leaders from Palestine, Poland, Belgium, Libya and Algeria who attended a ceremony in which a stone tablet was dedicated to the memory of the victims.