the six minnesota men were arrested sunday on terrorism charges .
suspects adnan abdihamid farah , 19 ; zacharia yusuf abdurahman , 19 ; hanad mustafe musse , 19 ; and guled ali omar , 20 arrested in minnesota .
mohamed abdihamid farah , 19 , and abdurahman yasin daud , 21 were taken into custody in san diego , california , after driving from minnesota .
three of the men were stopped in november trying to fly out of the country , but were only charged this month .