The aid ship blocked from delivering relief supplies to Gaza has arrived in Israel, campaigners confirmed.
The 11 passengers from Ireland and Malaysia on the MV Rachel Corrie cargo ship could be deported from the port town of Ashdod after the ship was taken over by Israeli forces, the Ireland Palestine Solidarity Campaign (IPSC) added.
The military seized the 1,200-tonne boat from the sea. No resistance was encountered.
The IPSC said: "No contact has yet been made with the kidnapped passengers but we have learned that they have been taken to Holon detention centre where they could be deported as early as tonight."
The seemingly bloodless action contrasted with a violent confrontation at sea earlier this week when Israeli forces blocked a Turkish aid vessel trying to reach the territory. At the time, Israeli commandos descended from helicopters and a clash with passengers left nine pro-Palestinian activists dead.
The Irish ship - named for an American college student crushed to death by a bulldozer in 2003 while protesting against Israeli house demolitions in Gaza - was carrying hundreds of tonnes of aid, including wheelchairs, medical supplies and cement. It is unclear if some or all the supplies will be trucked by Israel to Gaza.
Foreign Secretary William Hague said: "I am glad that the interception of the Rachel Corrie has been resolved peacefully."
Pro-Palestinian demonstrations were held across Britain and Ireland.
Mr Hague added: "We continue to stress to the Israeli government the importance of an investigation that ensures accountability and commands the confidence of the international community, and includes international participation," he said.
"We urgently need to see unfettered access to Gaza to meet the humanitarian needs of the people of Gaza and to enable the reconstruction of homes, livelihoods and trade. That is why we continue to press the government of Israel to lift Gaza's closure."
