BISSAU (AFP) - Gunmen raided a Guinea-Bissau army barracks housing an elite unit near the capital’s airport Sunday, sparking a gunbattle that left at least six people dead, an AFP correspondent and a military source said. The pre-dawn attack is certain to add to tensions in the deeply troubled west African country, where a junta seized power in a coup in April. Unidentified armed men launched the assault on at about 4:00 am (0400 GMT), but soldiers fought off the attack after about an hour of fighting, forcing the assailants to flee, witnesses said.