The lawyer of Kenya's deputy president William Ruto says the collapse of the case against his client at the International Criminal Court is a damning indictment of the prosecution whose key witnesses were found not to be reliable.

Karim Khan said Wednesday the case in which Ruto and former broadcaster Joshua Arap Sang were charged with crimes against humanity for allegedly orchestrating post-election violence in 2007-08 that killed more than 1,000 people was built on a flawed foundation. Khan said former ICC chief prosecutor Moreno Ocampo did shoddy investigations and rushed to present names of suspects for the "headlines."

ICC judges set Ruto and Sang free Tuesday after declaring a mistrial saying there was insufficient evidence.