From Halopedia, the Halo wiki
Kroedis II was a human colony planet. At some point during the Human-Covenant War, a Minor Prophet was assassinated by the Jiralhanae chieftain Bassus, who became tired of the Prophets' manipulations; Bassus then blamed the UNSC as responsible for the Prophet's death. Convinced of this statement, Covenant forces under Supreme Commander Thel 'Vadamee attacked and glassed the planet.
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