Hannoun was arrested on December 27, 2025, with eight others on charges of financing
Hamas. According to authorities, the defendants had sent millions of euros directly to Hamas members or to organizations banned by Israel due to their links to Hamas. They also referred to Hannoun as the leader of Hamas in Italy. Hannoun's lawyers have said that "the charges against our client were fabricated by Israel". The charges were criticized in
CounterPunch as an attempt to criminalize sending aid to Gaza and suppress pro-Palestine solidarity in Italy. In January 2026, three of Hannoun's co-defendants were released. In April 2026, the
Supreme Court of Cassation upheld the decision to release them and ordered the Court of Review to decide whether to release the remaining defendants. The Court also decided that evidence submitted by Israel was inadmissible. == Personal life ==