FILE - In this Wednesday, March 18, 2015 file photo, a victim is evacuated by rescue workers outside the Bardo museum in Tunis, Tunisia. Italian police have arrested a Moroccan man on a Tunisian arrest warrant, accusing him of helping organize and execute the March 18 attack on Tunisia's Bardo museum that left 22 people dead, authorities said Wednesday, May 20, 2015. Touil Abdelmajid was arrested Tuesday evening at the home of his mother in Gaggiano, near Milan, prosecutor Bruno Megale told a news conference. (AP Photo/Hassene Dridi, File) (The Associated Press)
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Milan chief anti-terrorism investigator Bruno Megale, center, speaks during a press conference in Milan, Italy, Wednesday, May 20, 2015. Police say Abdelmajid Touil, the Moroccan man arrested in connection with the Tunisian museum attack, had arrived in Italy aboard a migrant boat a month before the attack and was ordered expelled. (Mourad Balti Touati/ANSA via AP) (The Associated Press)
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The room in Gaggiano, near Milan, Italy, where Abdelmajid Touil was arrested on Tuesday evening is seen in this photo taken Wednesday, May 20, 2015. Touil , a 22-year-old Moroccan was arrested on suspicion he helped organize the attack on Tunisia's Bardo Museum. He was previously identified in February at Porto Empedocle, Sicily, after he landed on a migrant boat carrying 90 people. (Matteo Bazzi/ANSA via AP Photo) ITALY OUT (The Associated Press)
ROME – Italian news reports say police have arrested a Moroccan man on suspicion he was involved in the March 18 attack on Tunisia's Bardo museum that left 22 people dead.
The ANSA news agency, citing state police, said officers in Gaggino, near Milan, arrested the 22-year-old on Tuesday night.
A news conference was planned at the Milan police station Wednesday morning.