Сабіру

Sabiru (サビル, Sabiru) was a young high level shinobi in Konohagakure's tactical division. He was later discovered to be a traitor and a spy. Sabiru was part of Konohagakure's tactical and defence division during the Third Hokage's administration. He had seemingly come up with a plan that would fortify Konohagakure's defences so much that the Third stated that it would fortify the peace in Konohagakure forever. He however was discovered to be a traitor of the village by Kisuke Maboroshi, a member of the ANBU. When Kisuke confronted Sabiru, he removed Kisuke's soul essentially putting him into a comatose state.

After murdering Kisuke by deactivating his life support system Naruto Uzumaki tried to expose him as a spy. Later with help from Kakashi Hatake he was found liable, but before they could extract any information from him he was taken out by a hidden Kabuto Yakushi. Debut: Naruto Shippūden Episode #193 (source: http://naruto.wikia.com/wiki/Sabiru)