The other passengers remain in Israeli custody, among them former Georgia congresswoman Cynthia McKinney and 1977 Nobel Peace Prize recipient Mairead Maguire, who co-founded a group that worked for peace in Northern Ireland.
Israeli naval forces on Tuesday intercepted the Greek-registered Arion in the Mediterranean Sea 23 miles off the Gaza coast.
The Arion was carrying humanitarian aid to Gaza, according to the U.S.-based Free Gaza Movement. The organization had renamed the ship Spirit of Humanity and refers to it by that name on its web site.
