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Vitek is one of the men claiming to be Temerian guards who boarded the barge chartered by the Malatius and Grock Company in the Pontar Delta. They tried to arrest Geralt, saying he'd been seen with a young girl and implying that the witcher's motives were anything but honourable.

They were most likely not Temerian guards at all, but imposters hired by Rience to find Ciri.