Nairobi - The International Criminal Court has raised concern over the killing of a man who has been described by other officials as a witness in the trial of Kenya's deputy president William Ruto.
The ICC said late on Tuesday the victim, Meshack Yebei, was not listed as a prosecution witness but the court had offered Yebei a safe residency in a new location.
Yebei was abducted from his home town in western Kenya on 28 December. His body was found five days later.
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Ken Wafula, a human rights activist who has been in contact with Yebei's family, says Yebei had been dropped as a prosecution witness.
Ruto and radio journalist Joshua Sang are on trial for crimes against humanity for the 2007-08 post-election violence where more than 1 000 people died.