Israeli media says activists face detention if they fail to comply with Israeli army orders.
The vessel with 12 people on board, including climate activist Greta Thunberg, is carrying humanitarian aid for Gaza that is under Israeli blockade.
Freedom Flotilla on its way to Gaza as critics call for ship to sink
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Greta Thunberg has shared a pre-recorded video appealing for international help.
“My name is Greta Thunberg, and I am from Sweden,” Thunberg said in the video recorded on board the Madleen, before tonight’s events.
Activists say Israeli troops have boarded aid ship bound for Gaza
Israel threatens Greta Thunberg's 'Freedom Flotilla' Gaza cruise
Freedom Flotilla Coalition says alarm sounded on its Gaza-bound aid ship
Israel vows to prevent Freedom Flotilla, aid from reaching Gaza
What to Know About Israel’s Seizure of the Gaza Aid Boat Carrying Greta Thunberg
Madleen: Israel warns it will stop aid flotilla reaching Gaza
Greta's siege-busting yacht 'will be met with Israeli missile boats'
Greta Thunberg Gaza flotilla reaches port after being seized by Israel
Israeli forces take control of Gaza aid boat carrying Greta Thunberg
Freedom Flotilla Coalition says vessel approaching Gaza-bound aid ship has left
