Eight foreign oil workers were released unharmed Saturday, hours after being kidnapped at gunpoint by six unidentified men in a speed boat, a Nigerian military spokesman said according to Associated Press. No ransom was paid to obtain the release of the captives, who were freed at around 8:30 p.m. local time after being abducted early Saturday morning off a tanker, said state military spokesman Sagir Musa. He declined to identify the nationalities of the released workers.