Tokyo, Japan (CNN) -- An anti-whaling activist jumped aboard a Japanese security ship on Monday in a bid to make a citizen's arrest of its skipper over the sinking of their boat, an animal rights group said. Pete Bethune was captain of the "Ady Gill" boat, which sank after a Japanese whaler rammed into it in January, the Sea Shepherd Conservation Society, which owned the boat, said on its Web site. The New Zealander climbed aboard the Japanese ship "Shonan Maru 2" in the middle of the night from a jet ski to arrest its skipper, the animal rights group said.
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Sea Shepherd: New Zealand man climbs aboard Japanese ship to make citizen's arrest
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Man was captain of a boat that sank after colliding with a Japanese whaler
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Japan: Incident a "publicity stunt;" no decision on what to do with man
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Incident highlights feud between Japanese whaling fleets and conservation groups
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