[_TKO_]

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random comment: eko's brother is alive.


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I doubt this. Eko found his dead body earlier this season with his cross around his neck.

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Eko found a dead body with his brother's cross around it's neck. The body was in a plane, which itself obscured a very important location on the island. It's possible that the plane was placed there after the monster gleaned information from Eko.