From Halopedia, the Halo wiki
He was sent as a spy to observe the capture of Captain Jacob Keyes as the human and his some of his bridge crew attempted to escape the pursuing Covenant. He watched from his Banshee as Keyes was captured and the rest of the survivors were executed by a group of Sangheili who had been deployed from a Spirit dropship.
Later, he was sent to report on Field Master Noga 'Putumee's actions as the Field Master commanded an ambush of a human supply caravan led by First Lieutenant Melissa McKay. One of the Marines in the convoy, Lance Corporal "Snaky" Jones, a sniper, shot 'Mortumee as the spy stood next to the Field Master. The bullet went up and out 'Mortumee's head, causing it to violently explode. The Field Master managed to dodge Jones' second shot, which was aimed at him. 'Putumee's only emotion was annoyance, as he would have to write 'Mortumee's report himself.
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