LAGOS, June 2 (Reuters) - Six foreign workers seized from a Nigerian oil facility operated by U.S. energy giant Chevron <CVX.N> on May 1 were all freed on Saturday, the rebel group that abducted them said.

The Movement for the Emancipation of the Niger Delta (MEND) said the expatriates -- four Italians, an American and a Croat -- were handed over to the Bayelsa state government.

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